Abstract
Inclusive heavy flavour production in γγ collisions has been studied with the L3 detector at the LEP collider. Preliminary results on charm and beauty production at √ s = 189 GeV are presented. Hadronic final states containing charm particles were identified either by detecting electrons or muons from their semi-leptonic decays or by reconstruction of charged D ∗ meson decays. The cross section for beauty production in γγ collisions has been measured for the first time. Even including real and virtual gluon emission (NLO QCD) the direct process γγ → c c, b b is insufficient to describe charm and beauty production in γγ collisions. The cross section values and event distributions require resolved processes, sensitive to the gluon density function of the photon.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
