Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photoproduction of $K\Lambda$ on the proton   Kaon photoproduction on the proton is studied in the resonance region using
an isobar model. The higher-spin nucleon (3/2 and 5/2) and hyperon (3/2)
resonances were included in the model utilizing the consistent formalism by
Pascalutsa and they were found to play an important role in data description.
The spin-1/2 and spin-3/2 hyperon resonances in combination with the Born terms
contribute significantly to the background part of the amplitude. Various forms
of the hadron form factor were considered in the construction and the dipole
and multidipole forms were selected as those most suitable for the data
description. Model parameters were fitted to new experimental data from CLAS,
LEPS, and GRAAL collaborations and two versions of the model, BS1 and BS2, were
chosen. Both models provide a good overall description of the data for the c.m.
energies from the threshold up to 2.4 GeV. Predicted cross sections of the
models at very small kaon angles being consistent with results of the
Saclay-Lyon model indicate that the models could be also successful in
predicting the hypernucleus production cross sections. Although kaon
photoproduction takes place in the third-resonance region with many resonant
states, the total number of included resonances, 15 and 16, is quite moderate
and it is comparable with numbers of resonances in other models. The set of
chosen nucleon resonances overlaps well with the set of the most probable
contributing states determined in the Bayesian analysis with the
Regge-plus-resonance model. Particularly, we confirm that the missing
resonances $P_{13}(1900)$ and $D_{13}(1875)$ do play important role in the
description of data. However, the spin-1/2 state $P_{11}(1880)$ included in the
Bayesian analysis was replaced in our analysis with the near-mass spin-5/2
state $N^*(1860)$, recently considered by the Particle Data Group.

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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an