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−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−n¯ oscillation lifetime and the LHC monojet signal. There are regions in the parameter space where the n−n¯ oscillation lifetime is found to be more constraining than the LHC constraints, which illustrates the importance of the next-generation n−n¯ oscillation experiments.
Highlights
Baryon number (B), an accidental global symmetry of the Standard Model (SM) Lagrangian, must be broken to dynamically generate the observed baryon asymmetry of the universe [1]
We find an interesting complementarity among the constraints arising from the observed baryon asymmetry, ratio of dark matter and baryon abundances, n − noscillation lifetime and the LHC monojet signal
This makes it plausible to envisage a TeV-scale model of ∆B = 2 that can be tested in laboratory experiments, while simultaneously solving the cosmological puzzle of baryogenesis, and possibly as a bonus, the apparent coincidence of baryon and dark matter (DM) abundances
Summary
S. Bhupal Dev, and Bhaskar Dutta3 1Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA. 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 neutronantineutron (n − 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 − noscillation lifetime and the LHC monojet signal. There are regions in the parameter space where the n − noscillation lifetime is found to be more constraining than the LHC constraints, which illustrates the importance of the next-generation n−noscillation experiments
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.