CP violation during the electroweak sphaleron transitions
High Energy Physics - Phenomenology
2016-10-18 v1
Abstract
We suggest a specific semiclassical background field, the so called pure gauge sphaleron explosion, to evaluate the magnitude of the CP violation stemming from the standard phase of the CKM matrix. We use it to evaluate the matrix elements of some next-to-leading order effective CP-violating operators suggested in the literature. We also derive the scale dependence of the corresponding coefficients. Finally, we discuss the expected magnitude of the CP violation in the cold electroweak scenario.
Keywords
Cite
@article{arxiv.1610.05144,
title = {CP violation during the electroweak sphaleron transitions},
author = {Edward Shuryak and Ismail Zahed},
journal= {arXiv preprint arXiv:1610.05144},
year = {2016}
}