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Gravitational waves-tomography of Low-Scale-Leptogenesis
- 1.0567194 - FZÚ 2023 RIV US eng J - Journal Article
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
R&D Projects: GA MŠMT(CZ) EF20_079/0017754
Grant - others:OP VVV - MSCA-IF IV FZU(XE) CZ.02.2.69/0.0/0.0/20_079/0017754
Institutional support: RVO:68378271
Keywords : Baryo-and Leptogenesis * Early Universe Particle Physics
OECD category: Particles and field physics
Impact factor: 5.4, year: 2022
Method of publishing: 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 Miis 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.
Permanent Link: https://hdl.handle.net/11104/0338473
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