Heavy Quark Production in $γγ$ Collisions

Details Heavy Quark Production in $γγ$ Collisions Heavy Quark Production in $γγ$ Collisions

2000-09-11

arxiv.org/abs/hep-ph/0009121v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, Talk given at the ICHEP'2000, Osaka, To appear in the proceedings

Scientific paper

New results on inclusive heavy quark production in gamma gamma collisions are presented. Charm and bottom production are investigated at LEP II energies by the experiments ALEPH, DELPHI, L3, and OPAL. The total and differential cross sections for charm quarks are measured. The contributions from the direct and single-resolved processes are separated and their fractions quantified. More detailed studies, such as the dependence of the cross section on the two-photon centre-of-mass energy and the charm structure function F^2_gamma,c, are reported. The inclusive bottom cross section is presented. Measurements are compared to next-to-leading order calculations.

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