Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 49: Flavour physics 2
T 49.8: Talk
Tuesday, March 5, 2024, 17:45–18:00, Geb. 30.41: HS 4
Higher twist corrections to B-meson decays into a proton and dark antibaryon from QCD light-cone sum rules [1] — •Anastasia Boushmelev and Marcel Wald — Theoretische Teilchenphysik, Center for Particle Physics Siegen, Universität Siegen
The B-Mesogenesis framework anticipates decays of B mesons into a dark antibaryon Ψ and various Standard Model baryons. Here, we focus on the exclusive decay process B→ p Ψ observed as a proton and missing energy in the final state and determine the decay width by employing the QCD light-cone sum rule framework. We include all contributions up to twist six to the nucleon distribution amplitudes in order to parameterize the non-perturbative effects in the operator product expansion. We obtain the decay width and branching fraction with respect to the mass mΨ of the dark antibaryon Ψ, normalized to the model-dependent effective four-fermion coupling.
[1] A. Boushmelev and M. Wald, [arXiv:2311.13482 [hep-ph]]
Keywords: B-Mesogenesis; QCD sum rules; Light-cone sum rules