Abstract.
Meson photoproduction with polarized photons has proved to be a powerful tool to identify contributions of baryon resonances that are not evident in the differential cross-sections. It provides information that are complementary to those extracted using pion-nucleon scattering data. Extensive results have been produced in the past on beam asymmetries by the Graal collaboration for η and π 0 on the proton. New results are now available for the same reactions on the quasi-free neutron and for the K+ photoproduction on the proton. Contributions from hitherto undetected baryon resonances may be important to understand the results.
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The GRAAL Collaboration., D'Angelo, A., Bartalini, O. et al. Meson photoproduction on the nucleon with polarized photons. Eur. Phys. J. A 31, 441–445 (2007). https://doi.org/10.1140/epja/i2006-10272-8
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DOI: https://doi.org/10.1140/epja/i2006-10272-8