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Photo- and electroproduction of K+ Lambda with a unitarity-restored isobar model

SYSNO ASEP	0488729
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Photo- and electroproduction of K+ Lambda with a unitarity-restored isobar model
Author(s)	Skoupil, Dalibor (UJF-V)_{SAI, ORCID} Bydžovský, Petr (UJF-V)_{RID, ORCID, SAI}
Number of authors	2
Article number	025202
Source Title	Physical Review C. - : American Physical Society - ISSN 2469-9985 Roč. 97, č. 2 (2018)
Number of pages	13 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	kaon photoproduction ; electromagnetic produciton ; K+ Lambda
Subject RIV	BE - Theoretical Physics
OECD category	Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
R&D Projects	GA15-04301S GA ČR - Czech Science Foundation (CSF)
Institutional support	UJF-V - RVO:61389005
UT WOS	000426015600008
EID SCOPUS	85043274537
DOI	10.1103/PhysRevC.97.025202
Annotation	Exploiting the isobar model, kaon photo- and electroproduction on the proton in the resonance region comes under scrutiny. An upgrade of our previous model, comprising higher-spin nucleon and hyperon exchanges in the consistent formalism, was accomplished by implementing energy-dependent widths of nucleon resonances, which leads to a different choice of hadron form factor with much softer values of cutoff parameter for the resonant part. For a reliable description of electroproduction, the necessity of including longitudinal couplings of nucleon resonances to virtual photons was revealed. We present a new model whose free parameters were adjusted to photo- and electroproduction data and which provides a reliable overall description of experimental data in all kinematic regions. The majority of nucleon resonances chosen in this analysis coincide with those selected in our previous analysis and also in the Bayesian analysis with the Regge-plus-resonance model as the states contributing to this process with the highest probability.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2019

Number of the records: 1