Eta Photoproduction as a Test of the Extended Chiral Symmetry
| dc.creator | Fernandez-Ramirez, C. | |
| dc.creator | de Guerra, E. Moya | |
| dc.creator | Udias, J. M. | |
| dc.date | 2007-06-05 | |
| dc.date.accessioned | 2026-07-07T11:16:37Z | |
| dc.date.available | 2026-07-07T11:16:37Z | |
| dc.description | We analyze the $γp \to ηp$ process from threshold up to 1.2 GeV, employing an effective Lagrangian approach that allows for a mixing of eta couplings of pseudoscalar and pseudovector nature. The mixing ratio of the couplings may serve as a quantitative estimation of the $SU_L(3)\times SU_R(3)$ extended chiral symmetry violation in this energy regime. The data analyzed (differential cross sections and asymmetries) show a preference for the pseudoscalar coupling -- 91% of pseudoscalar coupling component for the best fit. We stress that a more conclusive answer to this question requires a more complete electromagnetic multipole database than the presently available one. | |
| dc.description | Accepted for publication in Physics Letters B, 1 table, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0706.0616 | |
| dc.identifier | http://arxiv.org/abs/0706.0616 | |
| dc.identifier | Phys.Lett.B651:369-373,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.06.049 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192734 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Eta Photoproduction as a Test of the Extended Chiral Symmetry | |
| dc.type | text |