A Simple Testable Model of Baryon Number Violation: Baryogenesis, Dark Matter, Neutron-Antineutron Oscillation and Collider Signals

Abstract

We study a simple TeV-scale model of baryon number violation which explains the observed proximity of the dark matter and baryon abundances. The model has constraints arising from both low and high-energy processes, and in particular, predicts a sizable rate for the neutron-antineutron ($n-\bar{n}$) oscillation at low energy and the monojet signal at the LHC. We find an interesting complementarity among the constraints arising from the observed baryon asymmetry, ratio of dark matter and baryon abundances, $n-\bar{n}$ oscillation lifetime and the LHC monojet signal. There are regions in the parameter space where the $n-\bar{n}$ oscillation lifetime is found to be more constraining than the LHC constraints, which illustrates the importance of the next-generation $n-\bar{n}$ oscillation experiments.

8 pages, 4 figures; minor changes, version to appear in Phys. Lett. B

References in corpus (8)

• Limits on spin-dependent WIMP-nucleon cross section obtained from the complete LUX exposure
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Post--Sphaleron Baryogenesis
• Cladogenesis: Baryon-Dark Matter Coincidence from Branchings in Moduli Decay
• Neutrino Mass Hierarchy and neutron-anti-neutron Oscillation from Baryogenesis
• Unified TeV Scale Picture of Baryogenesis and Dark Matter
• Search for nucleon decay into charged antilepton plus meson in 0.316 megaton$\cdot$years exposure of the Super-Kamiokande water Cherenkov detector
• Baryogenesis by R-parity violating top quark decays and neutron-antineutron oscillations

Cited by in corpus (32)

• The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
• Dark Matter Interpretation of the Neutron Decay Anomaly
• Primordial Gravitational Waves in Nonstandard Cosmologies
• Scalar singlet dark matter in non-standard cosmologies
• Phenomenology of Self-Interacting Dark Matter in a Matter-Dominated Universe
• New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the European Spallation Source
• Reconstructing Non-standard Cosmologies with Dark Matter
• WIMPs during Reheating
• From WIMPs to FIMPs with Low Reheating Temperatures
• Particle Physics at the European Spallation Source
• Implications of an Improved Neutron-Antineutron Oscillation Search for Baryogenesis: A Minimal Effective Theory Analysis
• Hydrogen portal to exotic radioactivity
• Light Dark Matter from Leptogenesis
• Cosmological and astrophysical probes of dark baryons
• Gravitational wave signatures of PBH-generated baryon-dark matter coincidence
• Exploring dark matter, neutrino mass and $R_{K^{(\ast )},\varphi }$ anomalies in $L_{\mu }-L_{\tau }$ model
• Coloured Scalar Mediated Nucleon Decays to Invisible Fermion
• From WIMPs to FIMPs: Impact of Early Matter Domination
• Nucleon - Light Dark Matter Annihilation through Baryon Number Violation
• Direct baryogenesis in the broken phase
• Early Matter Domination from Long-Lived Particles in the Visible Sector
• Unitarity Bound on Dark Matter in Low-temperature Reheating Scenarios
• Accidental scale-invariant Majorana dark matter in leptoquark-Higgs portals
• How Macroscopic Limits on Neutron Star Baryon Loss Yield Microscopic Limits on Non-Standard-Model Baryon Decay
• A new approach to search for free neutron-antineutron oscillations using coherent neutron propagation in gas
• Dark Matter and Baryogenesis from Visible-Sector Long-Lived Particles
• The HIBEAM Instrument at the European Spallation Source
• Baryon Number Violation: From Nuclear Matrix Elements to BSM Physics
• RG evolution and effect of intermediate new physics on $\Delta B=2$ six-quark operators
• Effective Theory for Baryogenesis with a Majorana Fermion Pair Coupled to Quarks
• Probing bottom-associated production of a TeV scale scalar decaying to a top quark and dark matter at the LHC
• The Decomposition of Neutron-Antineutron Oscillation Operators