Light particles with baryon and lepton numbers

Abstract

We consider light new particles $\chi$ and $\varphi$ 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 $p\to e^{+}\varphi$, not yet fully constrained by dedicated searches. For $\chi$ and $\varphi$ 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$+\varphi$ 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.

6 pages, to appear in PLB

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Cited by in corpus (18)

• Strong constraints on decay and annihilation of dark matter from heating of gas-rich dwarf galaxies
• Neutron Stars with Baryon Number Violation, Probing Dark Sectors
• Probing Invisible Vector Meson Decays with NA64 and LDMX
• Cosmological and astrophysical probes of dark baryons
• Coloured Scalar Mediated Nucleon Decays to Invisible Fermion
• Dark sectors in neutron-shining-through-a-wall and nuclear absorption signals
• Neutron Dark Decay
• How Macroscopic Limits on Neutron Star Baryon Loss Yield Microscopic Limits on Non-Standard-Model Baryon Decay
• Gauge Baryon Number and Dibaryonic Dark Matter
• Flavor phenomenology of light dark sectors
• Matter-antimatter asymmetry and dark matter stability from baryon number conservation
• Leptoquarks, axions and the unification of B, L, and Peccei-Quinn symmetries
• Stellar Signals of a Baryon-Number-Violating Long-Range Force
• Baryonic and Leptonic GeV Dark Matter
• Nucleon Decays into Light New Particles in Neutrino Detectors
• New Physics Searches at Kaon and Hyperon Factories
• Neutron Portal and Dark Matter-Baryon Coincidence: from UV Completion to Phenomenology
• The Strange Physics of Dark Baryons