Letter to the Editor

Hard exclusive barion-antibarion production in 2-γ collisions

Carola F. Berger ; I.N.F.N. Sezione di Torino, Via P. Giuria 1, I-10125 Torino, Italy
Wolfgang Schweiger ; Institute of Theoretical Physics, University of Graz, A-8010 Graz, Universitätsplatz 5, Austria

Abstract

We present a perturbative calculation of baryon pair production in two-photon collisions, γγ → BB, 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¯p, ΛΛ, and Σ0Σ¯0 channels.

Keywords

perturbative QCD; diquarks; hard hadronic processes; 2-γ reactions

Hrčak ID:

305609

URI

https://hrcak.srce.hr/305609

Publication date:

1.3.2004.

Article data in other languages: croatian

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