Collider signals of baryogenesis and dark matter from B mesons: A roadmap to discovery
Abstract
Low-scale baryogenesis could be discovered at B factories and the LHC. In the B -Mesogenesis paradigm [G. Elor, M. Escudero, and A. E. Nelson, Phys. Rev. D 99, 035031 (2019), 10.1103/PhysRevD.99.035031], the C P -violating oscillations and subsequent decays of B mesons in the early Universe simultaneously explain the origin of the baryonic and the dark matter of the Universe. This mechanism for baryo- and dark matter genesis from B mesons gives rise to distinctive signals at collider experiments, which we scrutinize in this paper. We study C P -violating observables in the Bq0-B¯q0 system, discuss current and expected sensitivities for the exotic decays of B mesons into a visible baryon and missing energy, and explore the implications of direct searches for a TeV-scale colored scalar at the LHC and in meson-mixing observables. Remarkably, we conclude that a combination of measurements at BABAR, Belle, Belle II, LHCb, ATLAS, and CMS can fully test B -Mesogenesis.
- Publication:
-
Physical Review D
- Pub Date:
- August 2021
- DOI:
- 10.1103/PhysRevD.104.035028
- arXiv:
- arXiv:2101.02706
- Bibcode:
- 2021PhRvD.104c5028A
- Keywords:
-
- High Energy Physics - Phenomenology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Experiment
- E-Print:
- 28 pages, 13 figures, 5 appendices. v2: Major update. Thanks to our referee, we have found and analyzed and old ALEPH search for b-decays with large missing energy which leads to relevant new constraints on the parameter space. The discussion of the implications of CP violation measurements has also been improved. Main conclusions remain unchanged. v3: Fixed typos. Matches published version