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Semi-inclusive decays of $B$ meson into a dark anti-baryon and baryons
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abstract
Using the recently developed $B$-Mesogenesis scenario, we studied the semi-inclusive decays of $B$ meson into a dark anti-baryon $\psi$ plus any possible states $X$ containing $u/c$ and $d/s$ quarks with unit baryon number. The two types of effective Lagrangians proposed by the scenario are both considered in the study. The semi-inclusive decay branching fractions of $B\to X \psi$ are calculated by the method of heavy quark expansion, where the non-perturbative contributions from the matrix elements of dimension-5 operators are included. We obtained the branching fractions as functions of the dark anti-baryon mass. Using the experimental upper limits of the branching fractions, we presented the constraints of the coupling constants in the $B$-Mesogenesis scenario.
Forward citations
Cited by 2 Pith papers
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Constraining $B$-Mesogenesis models with inclusive and exclusive decays
Combining inclusive and exclusive B-meson decay rates, the authors rule out B-Mesogenesis dark matter masses above 3 GeV and find lifetime ratios do not further constrain the model.
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Constraints on the mass of the dark antibaryon using $B_d\rightarrow \Lambda \psi_{DS}$ channel in light cone QCD
The mass ranges for the dark antibaryon ψ_DS are determined by deriving the B_d → Λ ψ_DS branching fraction via light-cone QCD sum rules and comparing it to BaBar and Belle experimental bounds.
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