First principle derivation of semiclassical force for electroweak baryogenesis
High Energy Physics - Phenomenology
2014-11-17 v2 Astrophysics
High Energy Physics - Theory
Nuclear Theory
Abstract
We perform a systematic gradient expansion on kinetic equations and derive the CP-violating semiclassical force for fermions propagating in presence of a CP-violating wall at a first order electroweak phase transition. The force appears at order h-bar in the flow term of the kinetic equation and agrees with the semiclassical force used for baryogenesis computations. In particular we consider the force for charginos in both the MSSM and NMSSM. We then study the continuity equations for the vector and axial vector currents and stress the role of the latter as the one containing baryogenesis sources. We also show that there is no CP-violating force for bosons to order h-bar in gradient expansion.
Keywords
Cite
@article{arxiv.hep-ph/0105295,
title = {First principle derivation of semiclassical force for electroweak baryogenesis},
author = {Kimmo Kainulainen and Tomislav Prokopec and Michael G. Schmidt and Steffen Weinstock},
journal= {arXiv preprint arXiv:hep-ph/0105295},
year = {2014}
}
Comments
32 pages, the version published in JHEP