Probing flavored regimes of leptogenesis with gravitational waves from cosmic strings

Autor:	Chianese, Marco, Datta, Satyabrata, Miele, Gennaro, Samanta, Rome, Saviano, Ninetta
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Theory
Druh dokumentu:	Working Paper
Popis:	Cosmic strings radiate detectable gravitational waves in models featuring high-scale symmetry breaking, e.g., high-scale leptogenesis. In this Letter, for the first time, we show that different flavored regimes of high-scale leptogenesis can be tested distinctly with the spectral features in cosmic string-radiated gravitational waves. This is possible if the scalar field that makes right-handed neutrinos massive is feebly coupled to the Standard Model Higgs. Each flavored regime, sensitive to low-energy neutrino experiments, leaves a marked imprint on the gravitational waves spectrum. A three-flavor and a two-flavor regime could be probed by a characteristic fall-off of the gravitational wave spectrum at the LISA-DECIGO-ET frequency bands with preceding scale-invariant amplitudes bounded from above and below. We present Gravitational Waves windows for Flavored Regimes of Leptogenesis (GWFRL) falsifiable in the upcoming experiments. Comment: 5 pages, 2 figures, plus supplemental material
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2406.01231 Zobrazit plný text záznamu View this record from Arxiv