Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimates of the $X(3872)$ Cross Section at a Hadron Collider   The claim that the $X(3872)$ meson cannot be a charm-meson molecule because
its prompt production cross section at hadron colliders is too large is based
on an upper bound in terms of a cross section for producing charm-meson pairs.
Assuming $X$ is sufficiently weakly bound, we derive an equality between the
$X$ cross section and a charm-meson pair cross section that takes into account
the threshold enhancement from the $X$ resonance. The cross section for
producing $X$ is equal to that for producing $D^{*0} \bar{D}^0$ integrated up
to a relative momentum $k_\mathrm{max} = 7.7\,\gamma_X$, where $\gamma_X$ is
the binding momentum of $X$. We also derive an order-of-magnitude estimate of
the $X$ cross section in terms of a naive charm-meson pair cross section that
does not take into account the threshold enhancement, such as that produced by
a Monte Carlo event generator. The cross section for producing $X$ can be
approximated by the naive cross section for producing $D^{*0} \bar{D}^0$
integrated up to a relative momentum $k_\mathrm{max}$ of order $(m_\pi^2
\gamma_X)^{1/3}$. The estimates of the prompt $X$ cross section at hadron
colliders are consistent with the cross sections observed at the Tevatron and
the LHC.

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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-fin