Pismo uredniku
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
Sažetak
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.
Ključne riječi
perturbative QCD; diquarks; hard hadronic processes; 2-γ reactions
Hrčak ID:
305609
URI
Datum izdavanja:
1.3.2004.
Posjeta: 109 *