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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4858

Title: Transient domain walls and lepton asymmetry in the left-right symmetric model
Authors: CLINE, JM
YAJNIK, UA
NAYAK, SN
RABIKUMAR, M
Keywords: nonlocal electroweak baryogenesis
weak phase-transition
baryon asymmetry
standard model
neutrino masses
non-conservation
cp violation
universe
number
cosmology
Issue Date: 2002
Publisher: AMERICAN PHYSICAL SOC
Citation: PHYSICAL REVIEW D, 66(6), -
Abstract: It is shown that the dynamics of domain walls in left-right symmetric models, separating respective regions of unbroken SU(2)(L) and SU(2)(R) in the early universe, can give rise to baryogenesis via leptogenesis. Neutrinos have a spatially varying complex mass matrix due to CP-violating scalar condensates in the domain wall. The motion of the wall through the plasma generates a flux of lepton number across the wall which is converted to a lepton asymmetry by helicity-flipping scatterings. Subsequent processing of the lepton excess by sphalerons results in the observed baryon asymmetry, for a range of parameters in left-right symmetric models.
URI: http://dx.doi.org/10.1103/PhysRevD.66.065001
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4858
http://hdl.handle.net/10054/4858
ISSN: 0556-2821
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