Transmission regeneration of neutral kaons in hydrogen

Birulev, V.K. ; Genchev, V.I. ; Govorun, N.N. ; et al.
Sov.J.Nucl.Phys. 24 (1976) 390-396, 1976.
Inspire Record 1392573 DOI 10.17182/hepdata.19051

None

1 data table

No description provided.


STUDY OF THE DIFFERENTIAL CROSS-SECTION FOR THE REACTION K(L) p ---> K(S) p BETWEEN 5 AND 10-GeV/c INCIDENT MOMENTUM

Mugge, Marshall ; McQuate, David ; Morse, Robert ; et al.
Phys.Rev.D 20 (1979) 2105-2112, 1979.
Inspire Record 147369 DOI 10.17182/hepdata.4406

We discuss a measurement of the differential cross section for the reaction KLp→KSp for incident momenta between 5 and 10 GeV/c and the |t| region 0.025 to 0.5 (GeV/c)2, carried out using the SLAC 15-in. rapid-cycling hydrogen bubble chamber triggered by the K0 spectrometer facility. This hybrid detector allowed measurement of the KL beam momentum, measurement of the recoil-proton momentum, and measurement of the decay position and momentum of the KS. Over this momentum region the ratio of the real to imaginary part of the forward-scattering amplitude was determined to be 0.93±0.24 and the phase of the forward-scattering amplitude was determined to be -(138±7)°. A fit to the forward differential cross section of the form dσdt∝p2α(t)−2 to our data together with previous measurements of the KLp→KSp differential cross section at this and lower momenta yielded an α(0)=0.39±0.10 for the dominant ω Regge trajectory. The value of α(0) as determined from the phase φ=−π[α(0)+1]2 is 0.54±0.11.

4 data tables

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FORWARD CROSS SECTION AND OPTICAL THEOREM USED TO DETERMINE PHASE OF FORWARD AMPLITUDE. RE(AMP)/IM(AMP) IS REAL(AMP)/IMAG(AMP).

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Differential and Channel Cross-sections for the Reactions $K^0_L P \to K^0_S P$ and $K^0_L P \to \Lambda^0 \pi^+$ in the Center-of-mass Energy Range 1605-{MeV} to 1910-{MeV}

Corden, M.J. ; Cox, G.F. ; Kelsey, D.P. ; et al.
Nucl.Phys.B 155 (1979) 13-38, 1979.
Inspire Record 7734 DOI 10.17182/hepdata.34677

The differential and channel cross sections have been measured for the reactions K L 0 p → K S 0 p and K L 0 p → Λ 0 π + in nine energy intervals in the c.m. range 1605 to 1910 MeV. The regeneration reaction is a combination of the KN amplitudes (with I = 0 and 1) and the K N amplitude ( I = 1) and is very sensitive to the various KN phase-shift solutions, some of which show an exotic I = 0, P 1 resonance. Our results have been expressed in terms of frequency distributions and cross sections, normalised by the Λ 0 π + reaction. These results have been compared with the predictions of various partial-wave analyses. Qualitatively we can eliminate the P 1 non-resonant solution, though no solution correctly predicts our results.

22 data tables

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K0(L) K0(S) TRANSMISSION REGENERATION ON DEUTERONS AND NEUTRONS IN A MOMENTUM RANGE OF 10-GEV/C - 50-GEV/C

The BERLIN-BUDAPEST-DUBNA-PRAGUE-SERPUKHOV-SOFIYA-TBILISI collaboration Albrecht, K.-F. ; Birulev, V.K. ; Genchev, V. ; et al.
Nucl.Phys.B 158 (1979) 29-38, 1979.
Inspire Record 145094 DOI 10.17182/hepdata.34627

The energy dependence of the K L 0 -K S 0 transmission regeneration amplitudes on deuterons and neutrons in the momentum region 10–50 GeV/ c is determined. The moduli of the modified transmission amplitudes are momentum dependent. These dependences are fitted by the expression A j p − nj , where A j and n j ( j = d, n) are constants: A d =2.88 ±0.04 mb , n d =0.546±0.030, for deuterons , A n =1.97 ±0.14 mb , n n =0.530±0.019, for neutrons , The amplitude phases do not depend on the kaon momentum and are equal to ϕ d = (−130.9 ± 2.7)° ϕ n = (−132.3 ± 1.7)°. The mean value of the ratio of the total cross-section differences for K 0 and K 0 interactions with neutrons and protons is determined. The residues of the partial ω and ϱ amplitudes, which contribute to the kaon-nucleon interaction amplitudes, are also obtained.

2 data tables

FORWARD CROSS SECTION, AMPLITUDE AND PHASE FOR K0 REGENERATION.

(AK0 - K0) TOTAL CROSS SECTION DIFFERENCES.


Coherent $K$(s) Regeneration on Protons From 30-{GeV}/$c$ to 130-{GeV}/$c$

Bock, G.J. ; Aronson, S.H. ; Freudenreich, K. ; et al.
Phys.Rev.Lett. 42 (1979) 350, 1979.
Inspire Record 7461 DOI 10.17182/hepdata.20779

Precise measurements att=0 of the KLp→KSp amplitude (modulus and phase) were made. Over 50000 Kπ2 decays along with normalizing Kμ3 events were detected behind a 7.2-m-long liquid-hydrogen regenerator. The momentum dependence of the modulus and phase are presented, and the results are combined with those of other experiments to extract the relevant parameters of ω exchange.

2 data tables

RESULTS USING ETA+- = 2.15E-3.

RESULTS USING ETA+- = 2.27E-3.


A Study of the Reactions $K^0_L p \to K^0_S p$, $\Lambda \pi^+$, $\Sigma^0 \pi^+$ and $\Lambda \pi^+ \pi^0$ Near 550-{MeV}/$c$

Engler, A. ; Keyes, G. ; Kraemer, R.W. ; et al.
Phys.Rev.D 18 (1978) 3061, 1978.
Inspire Record 6591 DOI 10.17182/hepdata.24324

We present measurements of the differential and polarization cross sections for the reactions KL0p→Ks0p, Λπ+, Σ0π+, and Λπ+π0 made in a hydrogen bubble chamber exposed to a beam of KL0 with incident momentum 550±35 MeV/c. The quasielastic data imposes additional constraints on the partial-wave analyses of the KN and K¯N systems. Our data show no strong energy-dependent effects in the region of the reported Σ(1580), JP=32− state. The phase of the forward regeneration amplitude was found to be about - 160° independent of KL0 momentum.

8 data tables

SYSTEMATIC ERRORS INCLUDED.

ROUGH FIT - POSSIBLY OTHER SYSTEMATIC ERRORS.

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A MEASUREMENT OF THE K0(L) p ---> K0(S) p REACTION BETWEEN 4-GeV/c AND 14-GeV/c IN THE RANGE .1-GeV**2 less than or equal to t is less than or equal to 2-GeV**2

Cittolin, S. ; Gasparini, F. ; Goldin, M. ; et al.
Nucl.Phys.B 142 (1978) 410-444, 1978.
Inspire Record 6510 DOI 10.17182/hepdata.34941

We present experimental data on the K L 0 p → K S 0 p reaction between 4 and 14 GeV/ c in the range 0.1 ≲ | t | ≲ 2 GeV 2 . This experiment has been performed at the CERN PS, using spark chambers and a large aperture magnet. The results show a break of slope at t = −0.3 GeV 2 . The ω trajectory deduced from the data has an intercept α (0) = 0.5 and a slope α ′ = 0.88. A comparison with various models shows that the non-flip amplitude is dominant.

1 data table

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K0(L) p Interactions in the Center-Of-Mass Energy Range 1.54-GeV to 1.71-GeV

The Bologna-Edinburgh-Glasgow-Pisa-Rutherford collaboration Cameron, W. ; Capiluppi, P. ; Flaminio, E. ; et al.
Nucl.Phys.B 132 (1978) 189-211, 1978.
Inspire Record 121297 DOI 10.17182/hepdata.35162

New experimental results on the reactions K L 0 p→K S 0 p, Λπ + , Σ 0 π + andΛπ + π 0 at c.m. energies between 1.54 and 1.71 GeV are presented. This experiment has a statistical accuracy comparable with or greater than corresponding K − p and K − d experiments in the same energy range and a comparison with the data from these different types of experiments has been made. A search has been made for narrow states with masses in the region of 1.58 GeV.

7 data tables

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Neutral Kaon Transmission Regeneration on Deuterons and Neutrons in Kaon Momentum Region of 10-GeV/c to 50-GeV/c

The Berlin-Budapest-Dubna-Prague-Serpukhov-Sofiya-Tbilisi collaboration Albrecht, K.F. ; Birulev, V.K. ; Vesztergombi, G. ; et al.
Sov.J.Nucl.Phys. 27 (1978) 199, 1978.
Inspire Record 122158 DOI 10.17182/hepdata.19037

None

4 data tables

THE AVERAGE PHASE IS -130.9 +- 2.7 DEG (NO EXPLICIT MOMENTUM DEPENDENCE). USING ABS(ETA+-) = 2.3*10**-3.

REGENERATION AMPLITUDE ASSUMING MOMENTUM INDEPENDENT CONSTANT PHASE.

CROSS SECTION DIFFERENCES ASSUMING MOMENTUM INDEPENDENT CONSTANT PHASE.

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K0(L) K0(s) Transmission Regeneration on Hydrogen

The Budapest-Dubna-Prague-Serpukhov collaboration Birulev, V.K. ; Genchev, V. ; Govorun, N.N. ; et al.
Nucl.Phys.B 115 (1976) 249-268, 1976.
Inspire Record 3964 DOI 10.17182/hepdata.35585

The energy dependence of the modulus and phase of the K L 0 -K S 0 regeneration amplitude on hydrogen in the range of 14–50 GeV has been investigated at the Serpukhov 70 GeV accelerator. It has been established that the modulus of the modified regeneration amplitude decreases with increasing momentum as 2|ƒ 21 0 (p)|/k = (0.84 ± 0.42) · p −0.50±0.15 mb . The amplitude phase is energy-independent and its mean value is ϕ 21 0 = −132° ± 5°. The results obtained are compared with other experiments and with predictions of different theoretical models.

1 data table

TABLE ALSO CALCULATES FORWARD DIFFERENTIAL CROSS SECTION AND SIG(AK0 P) - SIG(K0 P) TOTAL CROSS SECTION DIFFERENCES.