Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Normalization discrepancies in photoproduction reactions   Recent CLAS photoproduction results using a tagged bremsstrahlung photon beam
for the ground-state pseudoscalar meson photoproduction channels ($K^+
\Lambda$, $K^+ \Sigma^0$, $\eta p$, $\pi^+ n$ and $\pi^0 p$) show a
normalization discrepancy with older results from SLAC, DESY and CEA that used
an untagged bremsstrahlung beam. The CLAS results are roughly a factor of two
smaller than the older data. The CLAS $K^+\Lambda$ and $K^+\Sigma^0$ results
are in excellent agreement with the latest LEPS results that also employed a
tagged beam. For the vector meson ($\omega p$ and $\phi p$) channels, CLAS
agrees with SLAC results that employed a linearly polarized beam using laser
back-scattering, as well as Daresbury data that also came from tagged photon
experiment. We perform a global survey of these normalization issues and stress
on their significant effect on the coupling constants used in various partial
wave analyses.

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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: cond-mat