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CATEGORIES:HEP phenomenology joint Cavendish-DAMTP seminar
SUMMARY:Oleksii Matsedonskyi - Reassessing the window for 
 electroweak baryogenesis - Oleksii Matsedonskyi (D
 AMTP)
DTSTART;TZID=Europe/London:20220121T160000
DTEND;TZID=Europe/London:20220121T170000
UID:TALK168257AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/168257
DESCRIPTION:*The seminar will take place in hybrid format in t
 he Potter Room at DAMPT and via Zoom "here":https:
 //maths-cam-ac-uk.zoom.us/j/95215212460?pwd=TWN5cj
 J3azErSUYremw5UWRKL0NKUT09.*\n\nAbstract: Electrow
 eak baryogenesis (EWBG) crucially relies on the pr
 esence of new physics which is needed to generate 
 the first-order electroweak phase transition and a
  sufficient amount of CP violation. In most of the
  previously analysed models of EWBG\, the electrow
 eak phase transition happens at temperatures of ab
 out 100 GeV\, and the associated new physics has t
 o be correspondingly light. The latter fact often 
 leads to conflicts with experimental data. I will 
 discuss a mechanism leading to high-temperature br
 eaking of the electroweak symmetry by virtue of ne
 w fermions\, which changes the typical temperature
 s of EWBG and increases the mass scales of the ass
 ociated new physics. I will also analyse the pheno
 menological implications of this mechanism in a co
 ncrete model of electroweak baryogenesis in the co
 mposite Higgs framework.
LOCATION:Potter Room (B1.19)
CONTACT:Rene Poncelet
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