Showing 10 of 92 results
We present results on $\pi^+$-p interactions at 500 MeV from an experiment performed with the Saclay 35 cm hydrogen bubble chamber. A total of 1840 events have been observed. The branching ratio for elastic events is equal to 0.883$\pm$0.008. Eight events are unambiguously attributed to the reaction $\pi^+p\to\pi^+p\gamma$. Cross sections for the various reactions are given. The elastic angular distribution has been determined up to cos$\theta$ = +0.975 and shows evidence for S, P, D waves in good agreement with the results obtained in other experiments. For the one-pion production reactions, the ratio of $\pi^0$ production to $\pi^+$ production is found equal to 4.1$\pm$0.8. This result and the corresponding distributions for momentum and angle of the secondaries are compared with the predictions of the isobaric models.
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We present differential cross-sections for the electro-production of single charged pions from deuterium for a virtual photon mass squared −1.0 GeV2 and for pion nucleon masses in the range 1.23–1.68 GeV (the 1st and 2nd resonance regions). The data are compared with predictions from fits to hydrogen data.
FORWARD BINS.
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Multihadron production by electron-positron colliding beams has been investigated for total centre-of-mass energies ranging from 1.2 to 2.4 GeV. The total cross-section, σtot ≡ σ(e+e−→π+π−+ + anything), is of the order of σμμ ≡ σ(e+e−→μ+μ−), with a threshold near 1 GeV. Partial cross-sections for the various channels are also derived. The cross-section of the specific channel e+e−→π+π−π+π− exhibits an energy dependence which is suggestive of a heavier vector meson, ρ' (mρ,≈ 1.6 GeV,Гρ, ≈ 350 Mev), having the same quantum numbers as the ρ-meson. An upper limit is given for the coupling constantfρ′ (fρ′/4π<18, wherefρ′=mρ′2e/gγρ′). Final states withG+ parity are found to be much more abundant than those withG− parity. The average multiplicity (charged plus neutral final-state pions) is found to be betweet 4 and 5 over all the energy range explored.
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VALUES OF R CALCULATED FROM TOTAL CROSS SECTION.
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We have measured the cross section of four charged pion production in photon-photon interactions in the invariant mass range 1.0≦Wγγ≦3.2 GeV and up toQ2=16 GeV2. For 1.2 GeV≦Wγγ≦1.7 GeV the process is dominated by ρ0ρ0 production with a rapid rise in cross section around 1.2 GeV, well below the nominal ρ0ρ0 threshold. The observed distributions in the two particle masses and in the production and decay angles are well described by an incoherent sum of the phase-space subprocesses γγ →ρ0ρ0, →ρ0π+π−, and →π+π−π+π−. A spin-parity analysis of the ρ0ρ0 system showsJP=2+ to dominate, although 0+ is also possible forWγγ≦1.4 GeV. Negative partity states are excluded.
Fractions of subprocesses from 3-parameter fit to the no-tag data.
Fractions of subprocesses from 2-parameter fit to the no-tag data in limited energy range. The Q=1R contribution is set equal to zero.
Fractions of subprocesses from 3-parameter fit to the single-tag data.
Fractions of subprocesses from 2-parameter fit to the single-tag data in limited energy range. The Q=1R contribution is set equal to zero.
Fractions of subprocesses from 3-parameter fit as a function of the four-momentum transfer squared, Q**2.
Phase space acceptance corrected cross sections from no-tag data.
Phase space acceptance corrected cross sections from single tag data.
Cross sections as function of Q**2.
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The differential cross sections for γ p→ π + n from hydrogen and the π − π + ratios from deuterium were measured at nine c.m. angles between 30° and 150° for laboratory photon energies between 260 and 800 MeV. A magnetic spectrometer with three layers of scintillation hodoscope was used to detect charged π mesons. The cross section for γ n→ π − p was obtained as a product of d σ d Ω (γ p →π + n ) and the π − π + ratio. The overall features in the cross sections of the two reactions, γ p→ π + n and γ n→ π − p, and in the ratios, π − π + , agree with predictions by Moorhouse, Oberlack and Rosenfeld, and Metcalf and Walker. An investigation of the possible existence of an isotensor current was made and a negative result was found. In detailed balance comparison with the new results on the inverse reaction π − p→ γ n, no apparent violation of time-reversal invariance was observed.
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We report results for the virtual photon asymmetry $A_1$ on the nucleon from new Jefferson Lab measurements. The experiment, which used the CEBAF Large Acceptance Spectrometer and longitudinally polarized proton ($^{15}$NH$_3$) and deuteron ($^{15}$ND$_3$) targets, collected data with a longitudinally polarized electron beam at energies between 1.6 GeV and 5.7 GeV. In the present paper, we concentrate on our results for $A_1(x,Q^2)$ and the related ratio $g_1/F_1(x,Q^2)$ in the resonance and the deep inelastic regions for our lowest and highest beam energies, covering a range in momentum transfer $Q^2$ from 0.05 to 5.0 GeV$^2$ and in final-state invariant mass $W$ up to about 3 GeV. Our data show detailed structure in the resonance region, which leads to a strong $Q^2$--dependence of $A_1(x,Q^2)$ for $W$ below 2 GeV. At higher $W$, a smooth approach to the scaling limit, established by earlier experiments, can be seen, but $A_1(x,Q^2)$ is not strictly $Q^2$--independent. We add significantly to the world data set at high $x$, up to $x = 0.6$. Our data exceed the SU(6)-symmetric quark model expectation for both the proton and the deuteron while being consistent with a negative $d$-quark polarization up to our highest $x$. This data setshould improve next-to-leading order (NLO) pQCD fits of the parton polarization distributions.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.1300 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.1500 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.1700 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.1900 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.2100 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.2300 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.2500 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.2700 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.2900 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.3100 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.3300 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.3500 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.3700 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.3900 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.4100 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.4300 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.4500 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.4700 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.4900 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.5100 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.5300 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.5500 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.5700 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.5900 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.6100 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.6300 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.6500 GeV.
A1 and g1/F1 for the P target at incident energy 1.6000 GeV and W = 1.1100 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.1750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.2250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.2750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.3250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.3750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.4250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.4750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.5250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.5750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.6250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.6750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.7250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.7750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.8250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.8750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.9250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.9750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.0250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.0750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.1250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.1750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.2250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.2750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.3250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.3750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.4250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.4750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.5250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.5750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.6250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.6750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.7250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.7750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.8250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.8750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.9250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 2.9750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 3.0250 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 3.0750 GeV.
A1 and g1/F1 for the P target at incident energy 5.7000 GeV and W = 1.1250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.0850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.0850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.0950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.0950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.1950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.1950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.2950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.2950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.3950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.3950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.4950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.4950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.5950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.5950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.6950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.6950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.7050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.7150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.7250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 1.6000 GeV and W = 1.7350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.7950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.8950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 1.9950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.0950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.1950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.2950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.3950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.4950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.5950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.6950 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7050 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7150 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7250 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7350 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7450 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7550 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7650 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7750 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7850 GeV.
A1 and g1/F1 for the DEUT target at incident energy 5.7000 GeV and W = 2.7950 GeV.
Data are presented for the reaction ep → ep π 0 at a nominal four-momentum transfer squared of 0.5 (GeV/ c ) 2 . The data were obtained using an extracted electron beam from NINA and two magnetic spectrometers for coincidence detection of the electron and proton. Details are given of the experimental method and the results are given for isobar masses in the range 1.19 – 1.73 GeV/ c 2 .
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Forward cross sections.
Backward cross sections.
From S, P and D wave fit to d(sig)/domega.
The ep -> e'pi^+n reaction was studied in the first and second nucleon resonance regions in the 0.25 GeV^2 < Q^2 < 0.65 GeV^2 range using the CLAS detector at Thomas Jefferson National Accelerator Facility. For the first time the absolute cross sections were measured covering nearly the full angular range in the hadronic center-of-mass frame. The structure functions sigma_TL, sigma_TT and the linear combination sigma_T+epsilon*sigma_L were extracted by fitting the phi-dependence of the measured cross sections, and were compared to the MAID and Sato-Lee models.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.41 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.43 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.45 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.47 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.49 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.51 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.53 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.55 GeV.
Structure functions for Q**2 = 0.30 GeV**2 and W = 1.57 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.41 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.43 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.45 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.47 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.49 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.51 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.53 GeV.
Structure functions for Q**2 = 0.40 GeV**2 and W = 1.55 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.41 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.43 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.45 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.47 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.49 GeV.
Structure functions for Q**2 = 0.50 GeV**2 and W = 1.51 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.11 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.13 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.15 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.17 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.19 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.21 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.23 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.25 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.27 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.29 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.31 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.33 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.35 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.37 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.39 GeV.
Structure functions for Q**2 = 0.60 GeV**2 and W = 1.41 GeV.
Cross sections for W = 1.11 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.11 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.13 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.15 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.17 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.19 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.21 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.23 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.25 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.27 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.29 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.31 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.33 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.35 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.37 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.39 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.41 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.43 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.45 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.47 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.49 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.51 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.53 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.55 GeV**2 and THETA = 157.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 7.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 22.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 37.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 52.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 67.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 82.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 97.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 112.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 127.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 142.5 deg.
Cross sections for W = 1.57 GeV**2 and THETA = 157.5 deg.
The e + e − → π + π − cross section has been measured from about 280 events (an order of magnitude more than the previous world statistics) in the energy interval 1.35 ⩽ s ⩽ 2.4 GeV with the DM2 detector at DCI. The pion squared form factor | F π | 2 shows a deep minimum around 1.6 GeV/ c 2 and is better fit under the hypothesis of two ϱ-like resonance ⋍0.25 GeV/ c 2 wide with 1.42 and 1.77 GeV/ c 2 masses.
Statistical errors only.
The e + e − → ηπ + π − reaction has been measured in the center of mass energy interval 1350–2400 MeV by the magnetic detector DM2 at the Orsay storage ring DCI. Under the hypothesis of only one large resonance the cross section is not fit in a satisfactory way. The branching ratio τ − → η − π 0 ν τ =(0.13 ± 0.02)% is deduced via CVC from the above measurement.
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