NNLO tau+tau- production cross section at threshold
High Energy Physics - Phenomenology
2008-12-30 v1
Abstract
The threshold behaviour of the cross section sigma(e+e- -> tau+tau-) is analysed, taking into account the known higher-order corrections. At present, this observable can be determined to next-to-next-to-leading order (NNLO) in a combined expansion in powers of alpha_s and fermion velocities.
Keywords
Cite
@article{arxiv.hep-ph/0210003,
title = {NNLO tau+tau- production cross section at threshold},
author = {P. Ruiz-Femenia and A. Pich},
journal= {arXiv preprint arXiv:hep-ph/0210003},
year = {2008}
}
Comments
4 pages, 3 figures. To appear in the proceedings of QCD 02: High-Energy Physics International Conference in Quantum Chromodynamics, Montpellier, France, 2-9 Jul 2002