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Latest results from GRAAL collaboration
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作者 V. Vegna V. Bellini +32 位作者 J.P. Bouquet L. Casano A. D'Angelo J.P. Didelez R. Di Salvo A. Fantini D. Franco G. Gervino F. Ghio G. Giardina B. Girolami A. Giusa M. Guidal E. Hourany A.S. Ignatov R. Kunnel A. Lapik A. Lleres P. Levi Sandri F. Mammoliti G. Mandaglio M. Manganaro M. Moricciani A.N. Mushkarenkov V.G. Nedorezov C. Randieri D. Rebreyend N.V. Rudnev G. Russo C. Schaerf M.L. Sperduto M.C. Sutera A.Turinge 《Chinese Physics C》 SCIE CAS CSCD 2009年第12期1249-1253,共5页
The GRAAL experimental set-up consists of a polarized and tagged photon beam that covers an energy range from a minimum of 600 MeV up to a maximum of 1500 MeV, of a liquid Hydrogen or Deuterium target and of the 4π L... The GRAAL experimental set-up consists of a polarized and tagged photon beam that covers an energy range from a minimum of 600 MeV up to a maximum of 1500 MeV, of a liquid Hydrogen or Deuterium target and of the 4π Lagrange detector optimized for photon detection. It allows the study of pseudo-scalar and vector meson photoproduCtion on the nucleon in the energy range corresponding to the second and the third resonance regions. In the following, the ∑ beam asymmetries in η and π0 photoproduction on quasi-free nucleon are shown. Also single and double polarization observables in K+A photoproduction on free proton are shown; they are important to confirm the role of new or poorly known resonances in the 1900 MeV mass region. 展开更多
关键词 polarized photon meson photoproduction polarization observables
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