Theories and Experiments for Testable Baryogenesis Mechanisms: A Snowmass White Paper
J. Barrow, L. J. Broussard, James M. Cline, P. S. Bhupal Dev, Marco Drewes, Gilly Elor, Susan V Gardner, Jacopo Ghiglieri, Julia Harz, Yuri A. Kamyshkov, Juraj Klarić, Lisa W. Koerner, Laurent Benoit, Robert McGehee, Marieke Postma, Bibhushan Shakya, Robert E. Shrock, Jorinde van de Vis, Graham White · arXiv (Cornell University) · 2022
The baryon asymmetry of the Universe is one of the central motivations to expect physics beyond the Standard Model. In this Snowmass white paper, we review the challenges and opportunities in testing some of the central paradigms that predict physics at scales low enough to expect new experimental data in the next decade. Focusing on theoretical ideas and some of their experimental implications, in particular, we discuss neutron-antineutron transformations, flavor observables, next generation colliders, future neutron facilities, gravitational waves, searches for permanent electric dipole moments, $0νββ$ decay and some future large underground experiments as methods to test post-sphaleron baryogenesis, electroweak baryogenesis, mesogenesis and low scale leptogenesis. Finally, we comment on the cases where high scale physics can be probed through some of these same mechanisms.