Baryon number violation via Majorana neutrinos in the early Universe, at the LHC, and deep underground
Abstract
We propose and investigate a novel, minimal, and experimentally testable framework for baryogenesis, dubbed dexiogenesis, using baryon number violating effective interactions of right-handed Majorana neutrinos responsible for the seesaw mechanism. The distinct LHC signature of our framework is same-sign top quark final states, possibly originating from displaced vertices. The region of parameters relevant for LHC phenomenology can also yield concomitant signals in nucleon decay experiments. We provide a simple ultraviolet origin for our effective operators, by adding a color-triplet scalar, which could ultimately arise from a grand unified theory.
- Publication:
-
Physical Review D
- Pub Date:
- July 2015
- DOI:
- 10.1103/PhysRevD.92.016005
- arXiv:
- arXiv:1504.07244
- Bibcode:
- 2015PhRvD..92a6005D
- Keywords:
-
- 11.30.Fs;
- 13.35.Hb;
- 14.60.St;
- 14.65.Ha;
- Global symmetries;
- Decays of heavy neutrinos;
- Non-standard-model neutrinos right-handed neutrinos etc.;
- Top quarks;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 5 pages, 3 figures. references and discussions added