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.

arXiv comment6 pages, to appear in PLB

References in corpus (39)

• Physics of leptoquarks in precision experiments and at particle colliders
• Asymmetric Dark Matter: Theories, Signatures, and Constraints
• Physics Beyond Colliders at CERN: Beyond the Standard Model Working Group Report
• Dark Matter Interpretation of the Neutron Decay Anomaly
• Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
• Unbroken B-L Symmetry
• Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
• Search for narrow and broad dijet resonances in proton-proton collisions at $\sqrt{s}=$ 13 TeV and constraints on dark matter mediators and other new particles
• Improved lattice computation of proton decay matrix elements
• Search for Proton Decay via $p\to \nu K^{+}$ using 260 kiloton$\cdot$year data of Super-Kamiokande
• Unified origin of baryons and dark matter
• Neutron stars exclude light dark baryons
• Baryogenesis and Dark Matter from $B$ Mesons
• Lepton-Number-Charged Scalars and Neutrino Beamstrahlung
• A Search for Nucleon Decay via $n\to \bar{\nu }{\pi }^0$ and $p\to \bar{\nu }{\pi }^{+}$ in Super-Kamiokande
• Baryons and Dark Matter from the Late Decay of a Supersymmetric Condensate
• Search for the Invisible Decay of Neutrons with KamLAND
• Inclusive Nucleon Decay Searches as a Frontier of Baryon Number Violation
• Baryogenesis from Oscillations of Charmed or Beautiful Baryons
• Proton decay into charged leptons
• Neutral Hadrons Disappearing into the Darkness
• Dark Side of the Neutron?
• CP Violating Baryon Oscillations
• Neutron lifetime and dark decay of the neutron and hydrogen
• Leptonic Scalars at the LHC
• Interpretation of Lepton Flavor Violation
• Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment
• Evidence for the rare decay ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$
• Natural GeV Dark Matter and the Baryon-Dark Matter Coincidence Puzzle
• Proton decay and light sterile neutrinos
• Search for Trilepton Nucleon Decay via $p\to e^{+}\nu \nu$ and $p\to {\mu }^{+}\nu \nu$ in the Super-Kamiokande Experiment
• Nucleon Decay into Dark Sector
• Search for the Lepton-Number-Violating Decay ${\Xi }^{-}\to p{\mu }^{-}{\mu }^{-}$
• Nucleon - Light Dark Matter Annihilation through Baryon Number Violation
• Prospects for CP & P violation in ${\Lambda }_c^{+}$ decay at STCF
• Search for baryon number violation in top-quark decays
• Dark Matter Capture by Atomic Nuclei
• Gravitationally Induced Dark Matter Asymmetry and Dark Nucleon Decay
• How to produce antinuclei from dark matter

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