Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing Vector Mesons in Deuteron Break-up Reactions   We study vector meson photoproduction from the deuteron at high momentum
transfer, accompanied by break-up of the deuteron into a proton and neutron.
The large $-t$ involved allows one of the nucleons to be identified as struck,
and the other as a spectator to the $\gamma N\rightarrow VN$ subprocess.
Corrections to the plane wave impulse approximation involve final state
interactions (FSIs) between the struck nucleon or the vector meson, either of
which is energetic, with the slow spectator nucleon. In this regime, the
eikonal approximation is valid, so is employed to calculate the cross-section
for the reaction. Due to the high-energy nature of the FSIs, the maxima of the
rescatterings are located at nearly transverse directions of the fast hadrons.
This results in two peaks in the angular distribution of the spectator nucleon,
each corresponding to either the $V$-$N$ or the $p$-$n$ rescattering. The
$V$-$N$ peak provides a new means of probing the $V$-$N$ interaction. This is
checked for near-threshold $\phi$ and $J/\Psi$ photoproduction reactions which
demonstrate that the $V$-$N$ peak can be used to extract the largely unknown
amplitudes of $\phi$-$N$ and $J/\Psi$-$N$ interactions.
  Two additional phenomena are observed when extending the calculation of
$J/\Psi$ photoproduction to the sub-threshold and high-energy domains. In the
first case we observe overall suppression of FSI effects due to a restricted
phase space for sub-threshold production in the rescattering amplitude. In the
second, we observe cancellation of the $V$-$N$ rescattering amplitudes for
vector mesons produced off of different nucleons in the deuteron.

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The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: astro-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: math
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-fin