Leptogenesis bound on neutrino masses in left-right symmetric models with spontaneous D-parity violation

Journal Article · Wed Nov 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.093002· OSTI ID:20873115

Sahu, Narendra; Sarkar, Utpal ^[1]

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1. Theoretical Physics Division, Physical Research Laboratory, Ahmedabad-380 009 (India)

We study the baryogenesis via leptogenesis in a class of left-right symmetric models, in which D-parity is broken spontaneously. We first discuss the consequence of the spontaneous breaking of D-parity on the neutrino masses. Then we study the lepton asymmetry in various cases, from the decay of right-handed neutrinos as well as the triplet Higgs, depending on their relative masses they acquire from the symmetry breaking pattern. The leptogenesis bound on their masses is discussed by taking into account the low energy neutrino oscillation data. It is shown that a TeV scale leptogenesis is viable if there is an additional source of CP violation like CP-violating condensate in the left-right domain wall. This is demonstrated in a class of left-right symmetric models where D-parity breaks spontaneously at a high energy scale while allowing SU(2){sub R} gauge symmetry to break at the TeV scale.

• OSTI ID: 20873115
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BARYONS
COSMOLOGY
CP INVARIANCE
GAUGE INVARIANCE
HIGGS BOSONS
HIGGS MODEL
INTERMEDIATE BOSONS
NEUTRINO OSCILLATION
NEUTRINOS
PARITY
PARTICLE DECAY
PARTICLE PRODUCTION
QUANTUM FIELD THEORY
REST MASS
SU-2 GROUPS
SYMMETRY BREAKING
TEV RANGE
TRIPLETS