https://doi.org/10.1140/epja/i2007-10560-9
Regular Article - Theoretical Physics
Chiral constituent quark model study of the process γp → ηp ⋆
1
DAPNIA/SPhN, DSM, CEA/Saclay, 91191, Gif-sur-Yvette, France
2
Department of Computer and Information Science, University of Maryland, 20783, MD, USA
3
Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, PRC
Received:
14
December
2007
Accepted:
21
January
2008
Published online:
24
March
2008
A constituent quark model is developed for the reaction γp → ηp , allowing us to investigate all available data for differential cross-sections as well as single polarization asymmetries (beam and target) by including all of the PDG, one to four star, nucleon resonances (S11, P11, P13, D13, D15, F15, F17, G17, G19, H19, I1,11, and K1,13). Issues related to the missing resonances are also briefly discussed by examining possible contributions from several new resonances (S11, P11, P13, D13, D15, and H1,11).
PACS: 13.60.Le Meson production – / 14.20.Gk Baryon resonances with S = 0 –
© Società Italiana di Fisica and Springer-Verlag, 2008