Istituto Nazionale di Fisica Nucleare
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Calendario eventi

Electroweak Phase Transition and Baryogenesis in Composite Higgs Models
Martedì 21 Maggio 2019, 02:30pm - 03:30pm
Visite : 85
Speakers: Benedict Von Harling (IFAE)
In this talk, I present a study of the electroweak phase transition in
composite Higgs models, where the Higgs arises from a new,
strongly-coupled sector which 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 it is found that the electroweak phase transition in this
scenario can naturally be first-order, allowing 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
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.
https://agenda.infn.it/event/18759/
INFN Sezione di Firenze
via Sansone 1, 50019 Sesto Fiorentino (FI), Italia
tel. +39 055 457-2076 (Segreteria dell'INFN)
C.F. 84001850589 - P.I. IT04430461006  -  IPA: C3AX20
PEC firenze [at] pec infn it

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