Damping rate of neutrinos in the singlet Majoron model

Abstract

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.

23 pages, latex, 6 figures as uuencoded postscript file

References in corpus (6)

• Progress in Electroweak Baryogenesis
• Standard Model CP-violation and Baryon asymmetry
• Electroweak Baryogenesis and Standard Model CP Violation
• Standard Model CP-violation and Baryon asymmetry Part II: Finite Temperature
• Baryon Asymmetry of the Universe in the Standard Model
• Baryon and lepton number transport in electroweak phase transition

Cited by in corpus (4)

• Damping Rates and Mean Free Paths of Soft Fermion Collective Excitations in a Hot Fermion-Gauge-Scalar Theory
• Searching for New Physics in Future Neutrino Factory Experiments
• Neutral Heavy Leptons and Electroweak Baryogenesis
• Neutrino collective excitations in the Standard Model at high temperature