Affiliation:
1. Maryland Center for Fundamental Physics, Department of Physics, University of Maryland, College Park, Maryland 20742, USA
Abstract
The near equality of the dark matter and baryon energy densities is a remarkable coincidence, especially when one realizes that the baryon mass is exponentially sensitive to UV parameters in the form of dimensional transmutation. We explore a new dynamical mechanism, where in the presence of an arbitrary number density of baryons and dark matter, a scalar adjusts the masses of dark matter and baryons until the two energy densities are comparable. In this manner, the coincidence is explained regardless of the microscopic identity of dark matter and how it was produced. This new scalar causes a variety of experimental effects such as a new force and a (dark) matter density-dependent proton mass.
Published by the American Physical Society
2024
Funder
National Science Foundation
Institut Périmètre de physique théorique
Aspen Center for Physics
Government of Canada
Innovation, Science and Economic Development Canada
Ministry of Colleges and Universities
Province of Ontario
Maryland Center for Fundamental Physics
Publisher
American Physical Society (APS)
Cited by
1 articles.
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