SAIFR:3341

Electroweak Baryogenesis in Composite Higgs Models

(2023). Electroweak Baryogenesis in Composite Higgs Models. ICTP South American Institute for Fundamental Research. https://scivideos.org/index.php/ictp-saifr/3341

Electroweak Baryogenesis in Composite Higgs Models. ICTP South American Institute for Fundamental Research, Mar. 22, 2023, https://scivideos.org/index.php/ictp-saifr/3341 

          @misc{ scivideos_SAIFR:3341,
            doi = {},
            url = {https://scivideos.org/index.php/ictp-saifr/3341},
            author = {},
            keywords = {ICTP-SAIFR, IFT, UNESP},
            language = {en},
            title = {Electroweak Baryogenesis in Composite Higgs Models},
            publisher = { ICTP South American Institute for Fundamental Research},
            year = {2023},
            month = {mar},
            note = {SAIFR:3341 see, \url{https://scivideos.org/index.php/ictp-saifr/3341}}
          }
Benedict von Harling
Talk numberSAIFR:3341
Source RepositoryICTP – SAIFR
Collection
Talk Type Conference
Subject

Abstract

In this seminar, I present a study of the electroweak phase transition and baryogenesis in Composite Higgs models. In these scenarios, the Higgs arises from a new, strongly-coupled sector that confines near the TeV scale. The confinement phase transition is described in terms of the dilaton, the pseudo-Nambu-Goldstone boson of broken conformal invariance of the Composite Higgs sector. From the analysis of the joint Higgs-dilaton potential, I show that the electroweak phase transition can naturally be first-order, satisfying one key requirement for electroweak baryogenesis. I then discuss how a sufficient amount of CP violation – another key ingredient of baryogenesis – can be generated from quark Yukawa couplings which vary during the phase transition. Together this setup allows for successful electroweak baryogenesis. This scenario can be tested in complementary ways: in EDM experiments, by searching for dilaton production and deviations in Higgs couplings at colliders, and through gravitational waves at LISA.