Damping rate of neutrinos in the singlet Majoron model

The damping rate and free path of neutrinos in the singlet Majoron model have been calculated including both finite temperature and symmetry breaking effects. The behaviour of right- and left-handed fermions are found inherently different. While the damping rates of the left-handed leptons are essen...

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Bibliographic Details
Published in:arXiv.org 1995-09
Main Authors: Holopainen, Timo, Maalampi, Jukka, Jukka Sirkka, Vilja, Iiro
Format: Article
Language:English
Subjects:
Broken symmetry
Damping
Fermions
Leptons
Mathematical models
Neutrinos
Parameter sensitivity
Phase transitions
Standard model (particle physics)
Online Access:Get full text
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Summary:The damping rate and free path of neutrinos in the singlet Majoron model have been calculated including both finite temperature and symmetry breaking effects. The behaviour of right- and left-handed fermions are found inherently different. While the damping rates of the left-handed leptons are essentially model independent, e.g. directly applicable to the Standard Model, for the right-handed particles the rates are crucially sensitive to parameters of the scalar sector. In general, the damping rates are fairly large. The possibility of the right-handed neutrinos to penetrate deep into the broken phase in the electroweak phase transition still remains, however, for some parts of parameter space.
ISSN:2331-8422
DOI:10.48550/arxiv.9509359