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Higher twist corrections to $B$-meson decays into a proton and dark antibaryon from QCD light-cone sum rules
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abstract
The $B$-Mesogenesis framework anticipates decays of $B$ mesons into a dark antibaryon $\Psi$ and various Standard Model baryons. Here, we focus on the exclusive decay process $B\to p \Psi$ 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 $m_{\Psi}$ of the dark antibaryon $\Psi$, normalized to the model-dependent effective four-fermion coupling.
Forward citations
Cited by 4 Pith papers
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Light-cone sum rules with $B$-meson distribution amplitudes for the $B\to p$ form factors in $B$-mesogenesis models
New light-cone sum-rule form factors predict B+→p + dark-antiproton rates and lower limits showing that Belle II/BaBar bounds must reach 10⁻⁸–10⁻⁷ for a decisive test of B-mesogenesis.
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Are Subleading Effects Really Subleading? $B$-Meson Decays in Mesogenesis
In B-Mesogenesis, formally subleading heavy-quark-expansion corrections to inclusive B decays exceed the leading free-quark decay for dark-fermion masses above about 2–3 GeV, limiting the reliable range of HQE-based c...
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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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