$B$-meson decay into a proton and dark antibaryon from QCD light-cone sum rules

TL;DR

This paper calculates the decay amplitude of B mesons into a proton and a dark antibaryon using QCD light-cone sum rules, providing a theoretical framework for potential dark matter signals in B decays.

Contribution

It introduces a method to compute B meson decay amplitudes into dark antibaryons using QCD light-cone sum rules, linking dark matter models with hadronic decay processes.

Findings

Decay width estimates as a function of dark antibaryon mass and coupling

Application of QCD light-cone sum rules to B decay processes

Potential implications for dark matter detection in B decays

Abstract

The recently developed $B$-Mesogenesis scenario predicts decays of $B$ mesons into a baryon and hypothetical dark antibaryon $\Psi$. We suggest a method to calculate the amplitude of the simplest exclusive decay mode $B^+\to p \Psi$. Considering two models of $B$-Mesogenesis, we obtain the $B\to p$ hadronic matrix elements by applying QCD light-cone sum rules with the proton light-cone distribution amplitudes. We estimate the $B^+\to p \Psi$ decay width as a function of the mass and effective coupling of the dark antibaryon.