标量共振对 $B_s - \bar B_s$ 混合角的影响
高能物理 - 唯象学
2010-10-27 v3 高能物理 - 实验
核理论
摘要
在广义 QCD 因子化框架内,包括 中所有领头阶修正,分析了 和 衰变。我们指出,计算出的宽度比 强烈表明,在从 衰变振幅中提取 混合角 时, 子代 介子或 介子中的 波效应不可忽略。
引用
@article{arxiv.1003.5980,
title = {Scalar resonance effects on the B_s - \bar B_s mixing angle},
author = {O. Leitner and J. -P. Dedonder and B. Loiseau and B. El-Bennich},
journal= {arXiv preprint arXiv:1003.5980},
year = {2010}
}
备注
16 pages and 3 figures; revised version due to erroneous discussion of annihilation contribution which led to their over-estimation. Main conclusions are not altered, yet Fig. 2-3 changed; one additional table (Table IX) compares theoretical values to data for branching fractions, asymmetries as well as polarizations. New paragraph about f_0(980) decay constant on page 14. Accepted in PRD