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arXiv · 2305.17622

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

Yu-Ji Shi·Ye Xing·Zhi-Peng Xing
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Abstract

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 $B\to X \psi$ 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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Yu-Ji Shi, Ye Xing, Zhi-Peng Xing. 2023-05-28. Semi-inclusive decays of $B$ meson into a dark anti-baryon and baryons. https://arxiv.org/abs/2305.17622

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