Electroweak resonant leptogenesis in the singlet Majoron model

Journal Article · Tue Jul 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.013008· OSTI ID:21250204

Pilaftsis, Apostolos ^[1]

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1. School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)

We study resonant leptogenesis at the electroweak phase transition in the singlet Majoron model with right-handed neutrinos. We consider a scenario where the SM gauge group and the lepton number break down spontaneously during a second-order electroweak phase transition. We calculate the flavor- and temperature-dependent leptonic asymmetries, by including the novel contributions from the transverse polarizations of the W{sup {+-}} and Z bosons. The required resummation of the gauge-dependent, off-shell, heavy-neutrino self-energies is consistently treated within the gauge-invariant framework of the pinch technique. Taking into consideration the freeze-out dynamics of sphalerons, we delineate the parameter space of the model that is compatible with successful electroweak resonant leptogenesis. The phenomenological and astrophysical implications of the model are discussed.

• OSTI ID: 21250204
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASTROPHYSICS
ASYMMETRY
FLAVOR MODEL
GAUGE INVARIANCE
LEPTON NUMBER
LEPTONS
NEUTRINOS
PARTICLE PRODUCTION
PHASE TRANSFORMATIONS
POLARIZATION
SELF-ENERGY
SIMULATION
TEMPERATURE DEPENDENCE
W MINUS BOSONS
W PLUS BOSONS
WEINBERG-SALAM GAUGE MODEL
Z NEUTRAL BOSONS