Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
| dc.creator | Zhong, Xian-Hui | |
| dc.creator | Zhao, Qiang | |
| dc.creator | He, Jun | |
| dc.creator | Saghai, Bijan | |
| dc.date | 2007-06-25 | |
| dc.date | 2007-11-18 | |
| dc.date.accessioned | 2026-07-07T11:17:10Z | |
| dc.date.available | 2026-07-07T11:17:10Z | |
| dc.description | A chiral quark model approach is extended to the study of the $πN$ scattering at low energies. The process of $π^{-}p \to ηn$ near threshold is investigated. The model is successful in describing the differential cross sections and total cross section near the $η$ production threshold. The roles of the resonances in $n\leq 2$ shells are clarified. Near threshold, the $S_{11}(1535)$ dominates the reactions, while the interferences from the $S_{11}(1650)$ turn out to be destructive around $W\lesssim 1.6$ GeV. The $D_{13}(1520)$ is crucial to give correct shapes of the differential cross sections. The nucleon pole term contributions are significant. The $P_{11}(1710)$ plays an important role around the c.m. energy $W=1.7$ GeV, it is crucial to produce an enhancement in the region of $W>1.6$ GeV as suggested by the data for total cross section. The $t$-channel is negligible in the reactions. | |
| dc.description | 17 pages, 5 figures. Version accepted by PRC. Some changes in the t-channel due to an error in the code | |
| dc.identifier | https://arxiv.org/abs/0706.3543 | |
| dc.identifier | http://arxiv.org/abs/0706.3543 | |
| dc.identifier | Phys.Rev.C76:065205,2007 | |
| dc.identifier | doi:10.1103/PhysRevC.76.065205 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192919 | |
| dc.subject | Nuclear Theory | |
| dc.title | Study of π^{-}p \to ηn at low energies in a chiral constituent quark model | |
| dc.type | text |