Showing 5 of 5 results
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.
Quasi-free photoproduction of eta-mesons off nucleons bound in the deuteron has been measured with the CBELSA/TAPS detector for incident photon energies up to 2.5 GeV at the Bonn ELSA accelerator. The eta-mesons have been detected in coincidence with recoil protons and recoil neutrons, which allows a detailed comparison of the quasi-free n(gamma,eta)n and p(gamma,eta)p reactions. The excitation function for eta-production off the neutron shows a pronounced bump-like structure at W=1.68 GeV (E_g ~ 1 GeV), which is absent for the proton.
Measured value of the quasi-free eta cross section off protons and neutrons as a function of incident photon energy.
Ratio of the measured quasi-free neutron to proton cross sections as a function of incident photon energy.
Measured angular distribution for an incident photon energy of 0.700 GeV.
Measured angular distribution for an incident photon energy of 0.750 GeV.
Measured angular distribution for an incident photon energy of 0.800 GeV.
Measured angular distribution for an incident photon energy of 0.850 GeV.
Measured angular distribution for an incident photon energy of 0.900 GeV.
Measured angular distribution for an incident photon energy of 0.950 GeV.
Measured angular distribution for an incident photon energy of 1.000 GeV.
Measured angular distribution for an incident photon energy of 1.100 GeV.
Measured angular distribution for an incident photon energy of 1.200 GeV.
Measured angular distribution for an incident photon energy of 1.300 GeV.
Measured angular distribution for an incident photon energy of 1.400 GeV.
Measured angular distribution for an incident photon energy of 1.500 GeV.
Measured angular distribution for an incident photon energy of 1.600 GeV.
Measured angular distribution for an incident photon energy of 1.700 GeV.
Measured angular distribution for an incident photon energy of 1.800 GeV.
Measured angular distribution for an incident photon energy of 1.900 GeV.
Measured angular distribution for an incident photon energy of 2.000 GeV.
Measured angular distribution for an incident photon energy of 2.100 GeV.
Measured angular distribution for an incident photon energy of 2.200 GeV.
Measured angular distribution for an incident photon energy of 2.400 GeV.
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 reaction gamma p --> K0 Sigma+ was measured in the photon energy range from threshold up to 2.6 GeV with the SAPHIR detector at the electron stretcher facility, ELSA, in Bonn. Results are presented on the reaction cross section and the polarization of the Sigma+ as a function of the kaon production angle in the centre-of-mass system, cos(Theta_K^{c.m.}), and the photon energy. The cross section is lower and varies less with photon energy and kaon production angle than that of gamma p --> K+ Sigma0. The Sigma+ is polarized predominantly at cos(Theta_K^{c.m.}) \approx 0. The data presented here are more precise than previous ones obtained with SAPHIR and extend the photon energy range to higher values. They are compared to isobar model calculations.
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Axis error includes +- 10/10 contribution (Normalization uncertainty already included.).
Polarization parameter of the SIGMA+ as a function of angle in two photon energy ranges.
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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