Leptonic Decays of Heavy Vector and Pseudoscalar Mesons

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2017,（6）
• 页码范围: 655-660
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/0253-6102/67/6/655

摘要

Pure leptonic decays of D*0 (B*s,B*a) → l+ l-and D±* (Ds*,B*+,B≈) → lvl are investigated.The hadronic contributions such as D0 → D*0γ → μ+μ-are also explored.We then obtain the updated branching fractions of the pseudoscalar mesons to lepton pairs are modified by a factor of few percentages.Specifically,the Br(B+ → e+ve) is reduced by a factor 13％.