Probing the Seesaw Mechanism with Cosmological Data

Autor:	Rodrigues, J. G., Benetti, Micol, Campista, Marcela, Alcaniz, Jailson
Rok vydání:	2020
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1088/1475-7516/2020/07/007
Popis:	We investigate cosmological consequences of an inflationary model which incorporates a generic seesaw extension (types I and II) of the Standard Model of Particle Physics. A non-minimal coupling between the inflaton field and the Ricci scalar is considered as well as radiative corrections at one loop order. This connection between the inflationary dynamics with neutrino physics results in a predictive model whose observational viability is investigated in light of the current cosmic microwave background data, baryon acoustic oscillation observations and type Ia supernovae measurements. Our results show that the non-minimal coupled seesaw potential provides a good description of the observational data when radiative corrections are positive. Such result favours the type II seesaw mechanism over type I and may be an indication for physics beyond the Standard Model. Comment: 17 pages, 8 figures. References added, typos corrected. Matches version published in JCAP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2002.05154 Zobrazit plný text záznamu View this record from Arxiv