Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-07-06
Phys.Rev. D64 (2001) 123529
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 2 Encapsulated Postscript figures, uses ReVTeX and epsfig.sty, expanded discussion, version to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.64.123529
We show that in the presence of large scale primordial hypermagnetic fields, it is possible to generate an axial asymmetry for a first order electroweak phase transition. This happens during the reflection and transmission of fermions off the true vacuum bubbles, due to the chiral nature of the fermion coupling with the background field in the symmetric phase. We derive and solve the Dirac equation for such fermions and compute the reflection and transmission coefficients for the case when these fermions move from the symmetric to the symmetry broken phase. We also comment on the possible implications of such axial charge segregation processes for baryon number generation.
Ayala Alejandro
Besprosvany Jaime
Pallares Gabriel
Piccinelli Gabriela
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