Semi-inclusive decays of B meson into a dark anti-baryon and baryons

被引：5
|
作者：
Shi, Yu-Ji [1 ,4 ]
Xing, Ye [2 ]
Xing, Zhi-Peng [3 ,5 ,6 ]
机构：
[1] East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China
[2] China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Peoples R China
[3] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China
[4] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China
[5] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China
[6] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Jiangsu, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 08期
基金：
美国国家科学基金会; 中国博士后科学基金;
关键词：
HEAVY; DISTRIBUTIONS; QCD;
D O I：
10.1140/epjc/s10052-023-11930-z
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Using the recently developed B-Mesogenesis scenario, we studied the semi-inclusive decays of B meson into a dark anti-baryon psi plus any possible states X containing u/c and d/s quarks with unit baryon number. The two types of effective Lagrangians proposed by the scenario are both considered in the study. The semi-inclusive decay branching fractions of B -> X psi are calculated by the method of heavy quark expansion, where the non-perturbative contributions from the matrix elements of dimension-5 operators are included. We obtained the branching fractions as functions of the dark anti-baryon mass. Using the experimental upper limits of the branching fractions, we presented the constraints of the coupling constants in the B-Mesogenesis scenario.
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页数：13
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