Constraints on the mass of the dark antibaryon using Bd→ ΛψDS channel in light cone QCD
Abstract
According to the B-mesogenesis framework, the baryon asymmetry of the Universe and dark matter can be simultaneously generated through CP-violating B-meson oscillations. In this mechanism, B-mesons decay into a Standard Model baryon and a dark-sector antibaryon, denoted by ψDS. Within this scenario, we investigate the allowed mass window for ψDS using Light Cone Sum Rules (LCSR) for Bd→Λ ψDS decay. To include nonperturbative effects, we employ contributions up to twist-6 of the Λ distribution amplitudes in the operator product expansion (OPE). We derive the branching fraction as a function of dark antibaryon mass and, by comparing with the experimental limits by the BaBar and Belle collaborations, determine the mass ranges of ψDS consistent with the B-mesogenesis mechanism.
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BibTeX
@misc{abri2026constraints,
title = {{Constraints on the mass of the dark antibaryon using $B_d\rightarrow Λψ_DS$ channel in light cone QCD}},
author = {M. A. Abri and N. Hajirasouliha and K. Azizi},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2605.13701},
eprint = {2605.13701},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.13701},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Constraints on the mass of the dark antibaryon using B_d→ Λψ_DS channel in light cone QCD
AU - M. A. Abri
AU - N. Hajirasouliha
AU - K. Azizi
PY - 2026
DA - 2026/09/20
PB - arXiv
DO - 10.48550/arxiv.2605.13701
UR - https://arxiv.org/abs/2605.13701
AB - According to the B-mesogenesis framework, the baryon asymmetry of the Universe and dark matter can be simultaneously generated through CP-violating B-meson oscillations. In this mechanism, B-mesons decay into a Standard Model baryon and a dark-sector antibaryon, denoted by ψ_DS. Within this scenario, we investigate the allowed mass window for ψ_DS using Light Cone Sum Rules (LCSR) for B_d→Λ ψ_DS decay. To include nonperturbative effects, we employ contributions up to twist-6 of the Λ distribution amplitudes in the operator product expansion (OPE). We derive the branching fraction as a function of dark antibaryon mass and, by comparing with the experimental limits by the BaBar and Belle collaborations, determine the mass ranges of ψ_DS consistent with the B-mesogenesis mechanism.
ER -