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Light particles with baryon and lepton numbers
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Light particles with baryon and lepton numbers
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We consider light new particles $\chi$ and $\phi$ that carry baryon and lepton numbers. If these particles are lighter than nucleons they lead to exotic decays such as $p\to \pi^+ \chi$ and $p\to e^+\phi$, not yet fully constrained by dedicated searches. For $\chi$ and $\phi$ masses in the GeV range proton decays are kinematically forbidden but other decays of the forms baryon $\to$ meson$+\chi$, meson $\to$ baryon$+\bar\chi$, and baryon $\to$ anti-lepton$+\phi$ involving heavy initial hadrons are allowed. This opens up the possibility to search for apparent baryon number violation not just in underground experiments such as Super-Kamiokande and DUNE but also in decays of heavy hadrons in charm and B factories.
Forward citations
Cited by 3 Pith papers
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Baryon-number-violating nucleon decays into a dark photon particle
A complete XLEFT basis for nucleon decay into a dark photon is matched to ChPT, yielding width formulas and first recast lifetime bounds from Super-K data.
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Neutron Portal and Dark Matter-Baryon Coincidence: from UV Completion to Phenomenology
A UV-complete neutron portal model dynamically solves the dark matter-baryon coincidence via a supercooled dark confinement transition that generates GeV-scale asymmetric DM and links to observed gravitational waves.
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Searching for apparent baryon number violation in $\Lambda_c^+$ decays at the Super Tau-Charm Facility
STCF with 1 ab^{-1} can probe several-TeV new-physics scales in sterile-neutrino EFT and constrain an RPV SUSY parameter to ~0.1 TeV^{-2} for apparent BNV in unexplored Lambda_c+ channels.
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