Synergy between cosmological and laboratory searches in neutrino physics

• DOI: 10.1016/j.dark.2023.101333
• Publication Date: 2023-09-22T17:03:46Z
• Authors: Martina Gerbino; Evan Grohs; Massimiliano Latt...; Kevork N. Abazajian; Nikita Blinov; Thejs Brinckmann; Mu-Chun Chen; Zelimir Djurcic; Peizhi Du; Miguel Escudero; Steffen Hagstotz; Kevin J. Kelly; Christiane S. Lorenz; Marilena Loverde; Pablo Martínez-Mi...; Olga Mena; Joel Meyers; Walter C. Pettus; Ninetta Saviano; Anna M. Suliga; Volodymyr Takhistov; Mariam Tórtola; José W.F. Valle; Benjamin Wallisch
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); Cosmology and Nongalactic Astrophysics (astro-ph.CO); 13. Climate action; 0103 physical sciences; FOS: Physical sciences; 7. Clean energy; 01 natural sciences; Astrophysics - Cosmology and Nongalactic Astrophysics

The intersection of the cosmic and neutrino frontiers is a rich field where much discovery space still remains. Neutrinos play a pivotal role in the hot big bang cosmology, influencing the dynamics of the universe over numerous decades in cosmological history. Recent studies have made tremendous progress in understanding some properties of cosmological neutrinos, primarily their energy density. Upcoming cosmological probes will measure the energy density of relativistic particles with higher precision, but could also start probing other properties of the neutrino spectra. When convolved with results from terrestrial experiments, cosmology can become even more acute at probing new physics related to neutrinos or even Beyond the Standard Model (BSM). Any discordance between laboratory and cosmological data sets may reveal new BSM physics and/or suggest alternative models of cosmology. We give examples of the intersection between terrestrial and cosmological probes in the neutrino sector, and briefly discuss the possibilities of what different laboratory experiments may see in conjunction with cosmological observatories.<br/>Originally prepared for submission to the Snowmass Community Planning Exercise, 2021; Current version accepted by Physics of the Dark Universe; 136 pages; 9 Figures<br/>