Hard exclusive baryon-antibaryon production in 2-$γ$ collisions

Details Hard exclusive baryon-antibaryon production in 2-$γ$ collisions Hard exclusive baryon-antibaryon production in 2-$γ$ collisions

2003-09-09

arxiv.org/abs/hep-ph/0309095v2

Fizika B13 (2004) 75-80

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures; v2: institutions updated, paper unchanged

Scientific paper

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.

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