Damping rate of neutrinos in the singlet Majoron model

Details Damping rate of neutrinos in the singlet Majoron model Damping rate of neutrinos in the singlet Majoron model

1995-09-22

arxiv.org/abs/hep-ph/9509359v1

Nucl.Phys. B473 (1996) 173-198

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, latex, 6 figures as uuencoded postscript file

Scientific paper

10.1016/0550-3213(96)81756-1

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.

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