Photoproduction of Theta^+(1540,1/2^+) reexamined with new theoretical information
| dc.creator | Nam, Seung-il | |
| dc.creator | Kim, Hyun-Chul | |
| dc.date | 2009-01-07 | |
| dc.date.accessioned | 2026-07-07T12:51:29Z | |
| dc.date.available | 2026-07-07T12:51:29Z | |
| dc.description | We reinvestigate the photoproduction of the exotic pentaquark baryon Theta^+(1540,1/2^+) from the gamma N -> Kbar Theta^+ reaction process within the effective Lagrangian approach, taking into account new theoretical information on the K-N-Theta and K*-N-Theta coupling strengths from the chiral quark-soliton model (chiQSM). We also consider the crossing-symmetric hadronic form factor, satisfying the on-shell condition as well. Due to the sizable vector and tensor couplings for the vector kaon, g_{K* N Theta} and f_{K* N Theta}, which are almost the same with the vector coupling g_{K N Theta} ~ 0.8 for the pseudoscalar kaon, the K*-exchange contribution plays a critical role in the photon beam asymmetries. | |
| dc.description | 16 pages, 16 figures | |
| dc.identifier | https://arxiv.org/abs/0901.0771 | |
| dc.identifier | http://arxiv.org/abs/0901.0771 | |
| dc.identifier | Phys.Rev.D79:034031,2009 | |
| dc.identifier | doi:10.1103/PhysRevD.79.034031 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/223003 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | Photoproduction of Theta^+(1540,1/2^+) reexamined with new theoretical information | |
| dc.type | text |