Chiral asymmetry during the EWPT from CP-violating scattering off bubble walls

Abstract

We compute a net electric current during a first order EWPT arising from the asymmetric propagation of fermion chiral modes due to a CP-violating interaction with the Higgs. The interaction is quantified in terms of a CP-violating phase in the bubble wall that separate both false and true vacuum phases. We comment on the possibility of this current to generate a seed magnetic field and its implications for primordial magne- togenesis in the early Universe.

To appear in the proceedings of the XLVII of the International Symposium of Multiparticle Dynamics, Tlaxcala, Mexico, September 10-15, 2017

References in corpus (4)

• The origin, evolution and signatures of primordial magnetic fields
• Constraints on Primordial Magnetic Fields from Planck combined with the South Pole Telescope CMB B-mode polarization measurements
• The evolution of primordial magnetic field since its generation
• Charge asymmetry from CP-violating fermion scattering off bubble walls during the electroweak phase transition