1995/07/06 by A. V. Berezhnoy, V. V. Kiselev, A. K. Likhoded
Physics and Astronomy · #hep-ph
published as Phys.Atom.Nucl. 59 (1996) 870-874; Yad.Fiz. 59 (1996) 909-913 · 7 pages, LATEX file and tar-compressed uuencoded figures
arxiv created 1995/07/06 · arxiv updated 2009/11/30
In the framework of QCD perturbation theory, total and differential cross sections of the Ξbc', Ξbc(*) and Ξcc(*) baryons production in gluon collisions are calculated in the leading order over αs for the doubly heavy (b c) and ( c c) diquarks. At both small and large transverse momenta of the baryons, a use of the mechanism of the heavy quark fragmentation into the heavy diquark is shown to underestimate the cross section values in comparison with the exact numerical calculations of complete set of diagrams. The expected in Tevatron experiments yield of baryons with two heavy quarks is evaluated as (1.3± 0.3) ⋅ 105 bcq-baryons and (1.6± 0.3) ⋅ 104 ccq-baryons at pT>5 GeV and |y|<1 of the baryon momentum and rapidity cuts, with account for the antiparticle yields.