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|Title:||Transient domain walls and lepton asymmetry in the left-right symmetric model|
|Keywords:||Nonlocal Electroweak Baryogenesis|
|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.|
|Appears in Collections:||Article|
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