Heavy-to-light decays with a two-loop accuracy
高能物理 - 唯象学
2008-11-26 v1
摘要
We present a determination of a new class of three-loop Feynman diagrams describing heavy-to-light transitions. We apply it to find the O(alpha_s^2) corrections to the top quark decay t -> bW and to the distribution of lepton invariant mass in the semileptonic b quark decay b -> ul\nu. We also confirm the previously determined total rate of that process as well as the O(alpha^2) corrections to the muon lifetime.
引用
@article{arxiv.hep-ph/0403221,
title = {Heavy-to-light decays with a two-loop accuracy},
author = {Ian Blokland and Andrzej Czarnecki and Maciej Slusarczyk and Fyodor Tkachov},
journal= {arXiv preprint arXiv:hep-ph/0403221},
year = {2008}
}
备注
5 pages