TY - JOUR
T1 - Polarization measurements in π0 photoproduction from the proton
AU - Gilman, R.
N1 - Funding Information:
I thank K. Wijesooriya for analyzing the data, A. Afanasev for many helpful discussions, X. Jiang, D. Meekins, and S. Strauch, for their contributions, and my cospokespeople R. Holt and Z.-E. Meziani. Southeastern Universities Research Association manages Thomas Jefferson National Accelerator Facility under DOE contract DE-AC05-84ER40150. The U.S. National Science Foundation grant PHY 00-98642 supports my research at Rutgers.
PY - 2003/2/28
Y1 - 2003/2/28
N2 - In the resonance region, up to W ∼ 2 GeV or so, π0 photoproduction probes resonance photoproduction, as well as non-resonant production processes. Above the resonance region, data are sparse, and it is not clear whether the reaction will be easier to understand with quark or with meson-baryon degrees of freedom. We have measured the proton recoil polarization for ten incident beam energies, across and above the resonance region. Despite the greatly extended kinematic range of the data, no approach to any existing quark-model prediction is seen.
AB - In the resonance region, up to W ∼ 2 GeV or so, π0 photoproduction probes resonance photoproduction, as well as non-resonant production processes. Above the resonance region, data are sparse, and it is not clear whether the reaction will be easier to understand with quark or with meson-baryon degrees of freedom. We have measured the proton recoil polarization for ten incident beam energies, across and above the resonance region. Despite the greatly extended kinematic range of the data, no approach to any existing quark-model prediction is seen.
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U2 - 10.1142/S0217732303010351
DO - 10.1142/S0217732303010351
M3 - Article
AN - SCOPUS:0037469833
SN - 0217-7323
VL - 18
SP - 286
EP - 289
JO - Modern Physics Letters A
JF - Modern Physics Letters A
IS - 2-6
ER -