The NNLO tau+tau- Production Cross Section Close to Threshold
High Energy Physics - Phenomenology
2009-12-31 v1 High Energy Physics - Experiment
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/0103259,
title = {The NNLO tau+tau- Production Cross Section Close to Threshold},
author = {P. Ruiz-Femenia and A. Pich},
journal= {arXiv preprint arXiv:hep-ph/0103259},
year = {2009}
}
Comments
23+1 pages, 6 figures