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Light particles with baryon and lepton numbers

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arxiv 2009.01256 v2 pith:T4ZGRUQE submitted 2020-09-02 hep-ph hep-ex

Light particles with baryon and lepton numbers

classification hep-ph hep-ex
keywords baryondecaysparticleshadronsheavyleptonlightmeson
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Baryon-number-violating nucleon decays into a dark photon particle

    hep-ph 2026-07 conditional novelty 6.0

    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.

  2. Neutron Portal and Dark Matter-Baryon Coincidence: from UV Completion to Phenomenology

    hep-ph 2026-04 unverdicted novelty 6.0

    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.

  3. Searching for apparent baryon number violation in $\Lambda_c^+$ decays at the Super Tau-Charm Facility

    hep-ph 2026-04 unverdicted novelty 5.0

    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.