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T: Fachverband Teilchenphysik

T 56: Flavour Physics 4

T 56.9: Vortrag

Mittwoch, 23. März 2022, 18:15–18:30, T-H15

B-meson decay into a proton and dark antibaryon from QCD light-cone sum rules — Alexander Khodjamirian and •Marcel Wald — Center for Particle Physics Siegen, Theoretische Teilchenphysik, Universität Siegen

Recently, a B-Mesogenesis scenario was suggested to simultaneously solve the baryon asymmetry and relic dark matter abundance problems. In this scenario, decays of B-mesons into a baryon and dark antibaryon in the final state are expected with an appreciable branching fraction within the reach of modern B factories. We suggest to apply QCD light-cone sum rules to the decay mode B⁺→ p Ψ, where Ψ is a dark antibaryon. With this method we obtain the B→ p hadronic matrix element of the three-quark effective operator in terms of the nucleon light-cone distribution amplitudes and estimate the partial width.