Finite-Mass Effects on Inclusive B-Meson Hadroproduction - High Energy Physics - PhenomenologyReportar como inadecuado




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Abstract: We calculate the transverse-momentum (p T) distribution for the inclusivehadroproduction of B mesons at intermediate values of p T at next-to-leadingorder (NLO) in a dedicated finite-mass scheme using realistic non-perturbativefragmentation functions that are obtained through a global fit to e^+e^- datafrom CERN LEP1 and SLAC SLC exploiting their universality and scalingviolations. We find that finite-mass effects moderately enhance the crosssection, by about 20% at p T = 2 m b, and rapidly fade out with increasingvalue of p T, so that the zero-mass prediction is reached. We also performcomparisons with recent ppbar data taken by the CDF Collaboration in run II atthe Fermilab Tevatron and comment on the usefulness of the fixed-flavor-numberscheme.



Autor: B.A. Kniehl, G. Kramer, I. Schienbein, H. Spiesberger

Fuente: https://arxiv.org/







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