B -> X_s gamma的NNLO QCD修正
高能物理 - 唯象学
2008-11-26 v2
摘要
本文综述了B -> X_s gamma的NNLO QCD修正的最新进展。计算包括三阶匹配条件、四阶异常维数以及二维和三维on-shell振幅。在charm夸克质量处通过插值得到三阶矩阵元的某些部分,该插值介于m_c=0情况下的大-beta_0近似和m_c >> m_b/2情况下的完整结果之间。
引用
@article{arxiv.hep-ph/0609288,
title = {Low Scale Seesaw, Electron EDM and Leptogenesis in a Model with Spontaneous CP Violation},
author = {Mu-Chun Chen and K. T. Mahanthappa},
journal= {arXiv preprint arXiv:hep-ph/0609288},
year = {2008}
}
备注
RevTeX; 17 pages; 7 figures; v2: Includes an extended discussion of leptogenesis; additional references added; typos corrected; the final version to appear in PRD