Dynamical O(alpha_s) Effects in Forward-Backward Asymmetries of Heavy Quarks
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We examine the O(alpha_s) forward-backward asymmetries for the production process e+ e- --> gamma,Z --> q qbar (g), tagging the outgoing heavy-quark jet at center-of-momentum energies off the Z-peak. The complicated analytic results are reduced to simple polynomial forms that provide excellent approximations. For charm and bottom quark, a full dynamical cancellation gives O(alpha_s) zeros in the forward-backward asymmetry close to the Z-peak. We conclude with a detailed numerical analysis of our results.
Keywords
Cite
@article{arxiv.hep-ph/9603344,
title = {Dynamical O(alpha_s) Effects in Forward-Backward Asymmetries of Heavy Quarks},
author = {Michael M. Tung},
journal= {arXiv preprint arXiv:hep-ph/9603344},
year = {2007}
}
Comments
13 pages (LaTeX), 7 figures + 4 tables (PostScript)