The formal seesaw mechanism of Majorana neutrinos with unbroken gauge symmetry

Autor: Zhi-zhong Xing
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Nuclear Physics B, Vol 987, Iss , Pp 116106- (2023)
Druh dokumentu: article
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2023.116106
Popis: We reformulate the canonical seesaw mechanism in the case that the electroweak gauge symmetry is unbroken, and show that it can formally work and allow us to derive an exact seesaw formula for the light and heavy Majorana neutrinos. We elucidate the reason why there is a mismatch between the mass eigenstates of heavy Majorana neutrinos associated with thermal leptogenesis and those associated with the seesaw framework, and establish the exact and explicit relations between the original and derivational seesaw parameters by using an Euler-like parametrization of the 6×6 active-sterile flavor mixing matrix.
Databáze: Directory of Open Access Journals