Photoproduction of K+Σ0 within the isobar model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00604106" target="_blank" >RIV/61389005:_____/24:00604106 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prc/abstract/10.1103/PhysRevC.110.065204" target="_blank" >https://journals.aps.org/prc/abstract/10.1103/PhysRevC.110.065204</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.110.065204" target="_blank" >10.1103/PhysRevC.110.065204</a>
Alternative languages
Result language
angličtina
Original language name
Photoproduction of K+Σ0 within the isobar model
Original language description
We investigate the photoproduction off a proton target in the channel with K+ and Sigma(0) in the final state. The model of our choice for description of this process is based on effective Lagrangians at the tree level, it is the so-called isobar model. This formalism was developed previously for description of K(+)A photoproduction, and the aim of this study is to provide an extension of this description towards Sigma photoproduction channels. Our fitting strategy has two stages. In the first stage we employ standard chi(2) minimization using a set of resonances, based on previous works. In the second stage, we apply a model selection procedure to the same set of resonances using L-1 regularization in combination with criteria from information theory, and we obtain a sparser model. This gives us two fits which we compare with data and comment on their behavior. Some of the available data (CLAS differential cross sections at energies W > 2.4 GeV, SAPHIR differential cross sections, and C-x and C-z' polarizations) are not included in the fits, but are used to test the predictive power of the two models. The sparser model shows better agreement with the unfitted data compared to the full model.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
110
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
065204
UT code for WoS article
001390131700002
EID of the result in the Scopus database
2-s2.0-85213557671