Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hard exclusive baryon-antibaryon production in 2-$\gamma$ collisions   We present a perturbative calculation of baryon pair production in two-photon
collisions, $\gamma \gamma \to B \bar{B}$, in which baryons are treated as
quark-diquark systems. Our approach accounts for constituent mass effects in a
systematic way. Taking the diquark-model parameters from foregoing studies of
other electron- and photon-induced baryonic reactions, our results agree well
with the most recent large momentum-transfer data for the $p\bar{p}$,
$\Lambda\bar{\Lambda}$, and $\Sigma^0\bar{\Sigma}^0$ channels.

13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
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The categories of this paper are: stat
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: adap-org
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
9
The categories of this paper are: nlin