New gauge boson W′ and radiative leptonic decays of charged B and D mesons

作者：Zuo, Ya-Bing^*; Yue, Chong-Xing; Yang, Wei; Hao, Yan-Nan; Zhang, Wei-Rong

来源：European Physical Journal C, 2018, 78(7): 571.

DOI：10.1140/epjc/s10052-018-6044-1

• FACTORIZATION
• MODEL

Considering the constraints on model parameters from the latest experimental data, we study the contributions of new gauge boson W' predicted by the general 221 models to the radiative leptonic decays of charged B and D mesons. It is found that the largest contributions of W' in the nonuniversal 221 model to the branching fractions occur in the decay modes B- ->gamma mu(-) (nu) over bar mu and B-->gamma tau(-) (nu) over bar (tau), which can reach to about 8% of the corresponding SM values in the up-quark mixing scenario. In contrast, the relative corrections of W' predicted by the un-unified 221 model to the branching fractions are very tiny and identical for all the decay modes.

• 出版日期2018-7-12
• 单位辽宁师范大学