Branching Fractions of $B$ Meson Decays in Mesogenesis

TL;DR

This paper calculates the branching fractions of specific B meson decays that could explain matter-antimatter asymmetry, aiding experimental tests of the Mesogenesis mechanism.

Contribution

It provides the first QCD Light Cone Sum Rules calculations of branching fractions for baryon number violating B meson decays relevant to Mesogenesis.

Findings

Branching fractions are estimated to be above 10^{-7} for certain decay modes.

Results inform experimental searches at B Factories and Hadron Colliders.

Implications for testing the baryogenesis mechanism in current and future experiments.

Abstract

Production of the matter-antimatter asymmetry in the $B$-Mesogenesis mechanism is directly related to the branching fraction of seemingly baryon number violating decays of $B$ mesons into a light Standard Model baryon and missing energy. Achieving the observed baryon asymmetry requires that the branching fraction for such decays be greater than about $10^{-7}-10^{-5}$. Experimental searches at $B$ Factories and Hadron Colliders target specific decay modes. Therefore, computing the exclusive branching fraction for each decay is a critical step towards testing Mesogenesis. In this work we use QCD Light Cone Sum Rules to compute the form factors and branching fractions of the various possible channels contributing to the baryon asymmetry. Using the results, we comment on implications for current and future experimental searches.