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.

引用

页数：13

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