Specific Features of Heavy Quark Production. LPHD approach to heavy particle spectra

Details Specific Features of Heavy Quark Production. LPHD approach to heavy particle spectra Specific Features of Heavy Quark Production. LPHD approach to heavy particle spectra

1995-06-26

arxiv.org/abs/hep-ph/9506425v1

Phys.Rev. D53 (1996) 89-119

Physics

High Energy Physics

High Energy Physics - Phenomenology

50 LaTeX pages including 2 Great Appendices and 13 pictures

Scientific paper

10.1103/PhysRevD.53.89

Perturbative QCD formula for inclusive energy spectra of heavy quarks from heavy quark initiated jets which takes into account collinear and/or soft logarithms in all orders, the exact first order result and two-loop effects is applied to distributions of heavy flavoured hadrons in the framework of the LPHD concept. Fits to experimentally measured charm and bottom mean energy losses result in $\alpha_{\MSbar}(M_Z)=0.125\pm 0.003\pm 0.004$ and $(2\GeV)^{-1}\int_0^{2\GeV} dk \alpha_s^{eff}(k)= 0.18\pm 0.01\pm 0.02$ with $\alpha_s^{eff}$ an infrared finite effective QCD coupling.

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