1. Meson photoproduction at GRAAL: preliminary results
- Author
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O. Bartalini, V. Bellini, J. P. Bocquet, M. Capogni, M. Castoldi, A. D’angelo, Annelisa d’Angelo, J. P. Didelez, R. Di Salvo, A. Fantini, G. Gervino, F. Ghio, B. Girolami, M. Guidal, E. Hourany, I. Kilvington, R. Kunne, V. Kuznetsov, A. Lapik, P. Levi Sandri, A. Lleres, D. Moricciani, V. Nedorezov, L. Nicoletti, D. Rebreyend, F. Renard, N. V. Rudnev, C. Schaerf, M. L. Sperduto, M. C. Sutera, A. Turinge, A. Zucchiatti, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), European Synchrotron Radiation Facility (ESRF), and GRAAL
- Subjects
Particle physics ,Angular range ,Proton ,Meson ,Nuclear Theory ,Theoretical models ,General Physics and Astronomy ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,PROTON ,01 natural sciences ,Polarised Gamma beam ,Nuclear Baryon Resonance ,Nuclear Physics ,SIGMA-BEAM ASYMMETRY ,Settore FIS/04 - Fisica Nucleare e Subnucleare ,Nuclear physics ,0103 physical sciences ,BGO CALORIMETER ,010306 general physics ,Nuclear Experiment ,ELECTROPRODUCTION ,RESONANCE ,Physics ,010308 nuclear & particles physics ,Pseudoscalar ,Cover (topology) ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Beam (structure) - Abstract
A polarised and tagged \(\vec \gamma \) ray beam is produced at GRAAL with energies ranging from 500 MeV up to 1500 MeV. Results of beam polarisation asymmetries and cross sections for the photoproduction of pseudoscalar mesons on the proton are presented. These very precise measurements cover the angular range 30°–150°, providing stringent constraints to theoretical models.
- Published
- 2001
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