Gravitational waves-tomography of Low-Scale-Leptogenesis

0567194 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Datta, S. - Samanta, Rome
Gravitational waves-tomography of Low-Scale-Leptogenesis.
Journal of High Energy Physics. Roč. 2022, č. 11 (2022), č. článku 159. ISSN 1029-8479. E-ISSN 1029-8479
Grant CEP: GA MŠMT(CZ) EF20_079/0017754
Grant ostatní: OP VVV - MSCA-IF IV FZU(XE) CZ.02.2.69/0.0/0.0/20_079/0017754
Institucionální podpora: RVO:68378271
Klíčová slova: Baryo-and Leptogenesis * Early Universe Particle Physics
Obor OECD: Particles and field physics
Impakt faktor: 5.4, rok: 2022
Způsob publikování: Open access

A long-lived scalar field (Φ) which couples weakly to the right-handed (RH) neutrinos (NRiRi​), generates small RH neutrino masses (Mii​) in Low-Scale-Leptogenesis (LSL) mechanisms, despite having a large vacuum expectation value vΦΦ​. In this case, the correlation shared by the Mii​s and the duration of the non-standard cosmic history driven by the Φ provides an excellent opportunity to study LSL signatures on primordial gravitational waves (GWs). We find it engaging, specifically for the gravitational waves that originate due to the inflationary blue-tilted tensor power spectrum and propagate through the non-standard cosmic epoch. Depending on Mii​, broadly, the scenario has two significant consequences.
Trvalý link: https://hdl.handle.net/11104/0338473