NNLO 阴影+阴影- 产生交叉截面在阈值处
高能物理 - 唯象学
2008-12-30 v1
摘要
分析了 sigma(e+e- -> tau+tau-) 交叉截面的阈值行为,并考虑了已知的高阶修正. 目前,该可观测量可在 alpha_s 与费米子速度的幂次展开中达到下一级-下一级阶 (NNLO).
关键词
引用
@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}
}
备注
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