Kaon photoproduction off proton

0471788 - ÚJF 2017 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Skoupil, Dalibor - Bydžovský, Petr
Kaon photoproduction off proton.
EPJ Web of Conferences. Vol. 130. Les Ulis: E D P Sciences, 2016, č. článku UNSP 05018. ISSN 2100-014X.
[14th International Workshop on Meson Production, Properties and Interaction (MESON 2016). Krakow (PL), 02.06.2016-07.06.2016]
Grant CEP: GA ČR(CZ) GA15-04301S
Institucionální podpora: RVO:61389005
Klíčová slova: kaon photoproduction * nucleon resonances * Regge formalism
Kód oboru RIV: BE - Teoretická fyzika

We have recently constructed our version of the Regge-plus-resonance (RPR) model and two variants of an isobar model for photoproduction of kaons on the proton, utilizing new experimental data from CLAS, LEPS, and GRAAL collaborations for adjusting free parameters of the models. Higher-spin nucleon (3/2 and 5/2) and hyperon (3/2) resonances were included using the consistent formalism by Pascalutsa and found to play an important role in data description. The set of chosen nucleon resonances in our new isobar models agrees well with the set of the most probable contributing states determined in the Bayesian analysis with the RPR model whilst only 6 out of 10 N*'s selected in the RPR fit of ours overlap with the nucleon resonant states in the Bayesian analysis. Results of two versions of the isobar model are compared to the new version of the RPR model and experimental data in the third-resonance region and their properties are discussed. We place an emphasis on the choice of resonances, the predictions in the forward- and backward-angle region as well as the choice of the hadron form factor.
Trvalý link: http://hdl.handle.net/11104/0269110