A new nucleon resonance in eta photoproduction - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: We present in this talk recent investigations on the nucleon-like resonanceN*1675 newly found in eta photoproduction by the GRAAL, Tohoku LNS-gamma andCB-ELSA collaborations. We focus on the production mechanism of the N*1675,examining its spin and parity theoretically within the framework of theeffective Lagrangian method. We expliucitly consider D {13}1520,S {11}1535, S {11}1650, D {15}1675, P {11}1710, P {13}1720 as well aspossible background contributions. We calculate the differential cross sectionsand beam asymmetries for the neutron and proton targets. It turns out thatthere is manifest isospin asymmetry in eta photoproduction, which can beexplained by the asymmetry in the transition magnetic moments: mu {gamma p p*}=


Author: Ki-Seok Choi, Seung-il Nam, Atsushi Hosaka, Hyun-Chul Kim

Source: https://arxiv.org/







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