Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Constituent Counting Rule and Omega Photoproduction   The constituent counting ruling (CCR) has been found to hold for numerous
hard, exclusive processes. It predicts the differential cross section at high
energies and fixed $\cos \theta_{c.m.}$ should follow $\frac{d \sigma}{dt} \sim
\frac{1}{s^{n-2}}$, where $n$ is the minimal number of constituents involved in
the reaction. Here we provide an in-depth analysis of the reaction $\gamma p
\rightarrow \omega p$ at $\theta_{c.m.}\sim 90^\circ$ using CLAS data with an
energy range of $s = 5 - 8$ GeV$^2$, where the CCR has been shown to work in
other reactions. We argue for a stringent method to select data to test the CCR
and utilize a Taylor-series expansion to take advantage of data from nearby
angle bins in our analysis. Na\"{i}vely, this reaction would have $n=9$ (or
$n=10$ if the photon is in a $q\bar{q}$ state) and we would expect a scaling of
$\sim s^{-7}$ ($s^{-8}$). Instead, a scaling of $s^{-(9.08 \pm 0.11)}$ was
observed. Explanations for this apparent failure of the na\"{i}ve CCR
assumptions are examined.

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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: econ