Charged B mesogenesis

Abstract

We leverage the CP violation in charged B meson decays to generate the observed baryon asymmetry and dark matter at Oð10 MeVÞ temperatures. We realize this in two scenarios: Bþ c mesogenesis and Bþ mesogenesis. In the first, CP-violating Bc decays to B mesons are followed by decays to dark and Standard Model baryons. In the second, CP-violating B decays to lighter charged mesons are accompanied by the latter’s decays to dark and Standard Model leptons, which then scatter into the baryon asymmetry. Bþc mesogenesis is actively being probed at Belle and LHCb, while Bþ mesogenesis can be tested at colliders and sterile neutrino searches.