Fermion scattering off electroweak phase transition kink walls with hypermagnetic fields

Abstract

We study the scattering of fermions off a finite width kink wall during the electroweak phase transition in the presence of a background hypermagnetic field. We derive and solve the Dirac equation for such fermions and compute the reflection and transmission coefficients for the case when the fermions move from the symmetric to the broken symmetry phase. We show that the chiral nature of the fermion coupling with the background field in the symmetric phase generates an axial asymmetry in the scattering processes. We discuss possible implications of such axial charge segregation for baryon number generation.

9 pages, 3 Postscript figures, uses RevTeX4. Expanded discussion, published version

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Cited by in corpus (15)

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• Generation of baryon inhomogeneities in the electroweak phase transition
• Symmetry restoration at finite temperature with weak magnetic fields
• Probing large-scale magnetism with the Cosmic Microwave Background
• Circular dichroism, magnetic knots and the spectropolarimetry of the Cosmic Microwave Background
• Axial charge segregation and CP violation during the electroweak phase transition with hypermagnetic fields
• Baryogenesis and CP-Violating Domain Walls in the Background of a Magnetic Field
• Response to an External Magnetic Field of the Decay Rate of a Neutral Scalar Field into a Charged Fermion Pair
• Charge asymmetry from CP-violating fermion scattering off bubble walls during the electroweak phase transition
• Chiral fermion mass and dispersion relations at finite temperature in the presence of hypermagnetic fields
• Fermion Scattering off a CP-violating Bubble Wall in the Background of a Uniform Magnetic Field
• Hypermagnetic knots and gravitational radiation at intermediate frequencies
• Exact solution for charged-particle propagation during a first-order electroweak phase transition with hypermagnetic fields