A Search for Baryogenesis and Dark Matter in B Decays
ORAL
Abstract
A mechanism of baryogenesis and dark matter production via B-meson oscillations and decays has been recently proposed to explain the observed dark matter abundance and matter-antimatter asymmetry in the universe. This mechanism introduces a light dark sector particle (ΨD) with a non-zero baryonic charge. A search for this new state in B → baryon + ΨD decays is performed using BABAR data. The search leverages the full reconstruction of the B meson in Υ(4S) → B+B- decays, accompanied by the reconstruction of a baryon (p, Λ, or Λ+C) to infer the presence of ΨD. No significant signal is observed, and strong constraints on the parameter space allowed by B-meson baryogenesis are set.
–
Publication: J. P. Lees et al [BaBar], ``A Search for Baryogenesis and Dark Matter in B+ → Lambda_c+ + psi_D Decays,'' to be submitted to PRD-Lett<br><br>J. P. Lees et al [BaBar], ``Search for Evidence of Baryogenesis and Dark Matter in B+ -> psi_D + p Decays at BABAR,'' Phys. Rev. Lett. 131, no.20, 201801 (2023)<br><br>J. P. Lees et al [BaBar], ``Search for B-mesogenesis at BABAR,'' Phys. Rev. D 107, no.9, 092001 (2023)<br><br>
Presenters
-
Bertrand Echenard
Caltech
Authors
-
Bertrand Echenard
Caltech