The Baryon Asymmetry from a Composite Higgs

by Oleksii Matsedonskyi

at Particles and Fields Seminar

Mon, 07 Jan 2019, 14:00
Physics building (#54) room 207

Abstract

We study the electroweak phase transition EWPT in Composite Higgs models Our analysis focuses on the case where EWPT is accompanied by the confinement phase transition of the strong sector responsible for producing the Higgs boson We describe the confinement in terms of the dilaton the pseudo Nambu Goldstone boson of spontaneously broken conformal invariance of the strong sector We show that the EWPT can naturally be strongly first order as required for successful electroweak baryogenesis EWBG Furthermore we examine the sizeable scale variation of the Higgs potential parameters during the EWPT In particular we consider in detail the case of a varying top quark Yukawa coupling and show that the resulting CP violation is sufficient for EWBG This scenario singles out the light dilaton region while satisfying all experimental bounds

Created on 22-02-2019 by Bar Lev, Yevgeny (ybarlev)
Updaded on 22-02-2019 by Bar Lev, Yevgeny (ybarlev)