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SUMMARY:Lepton flavor specific extended Higgs model
DTSTART;VALUE=DATE-TIME:20230915T124500Z
DTEND;VALUE=DATE-TIME:20230915T130000Z
DTSTAMP;VALUE=DATE-TIME:20260421T041526Z
UID:indico-contribution-23@cern.ch
DESCRIPTION:Speakers: Mr. GONÇALVES\, Bernardo (CFTP/IST)\nIn extended Hi
 ggs models\, a discrete symmetry is needed in the quark sector to avoid tr
 ee-level flavor-changing neutral currents. However\, this is not necessari
 ly the case in the lepton sector. We consider a model in which one Higgs c
 ouples to quarks and three others couple to the electron\, muon\, and tau\
 , respectively. This four-doublet model is presented with the full scalar 
 potential and the gauge and Yukawa couplings. The constraints from bounded
 ness\, perturbativity and oblique parameters are incorporated as well as c
 onstraints from meson-antimeson mixing\, radiative B-decays\, and the diph
 oton Higgs decay rate. We also consider bounds from searches for heavy neu
 tral and charged scalars at the LHC. Since the Standard Model Higgs coupli
 ngs match predictions very well\, we focus on the alignment limit of the m
 odel. It is shown that for a wide range of parameters\, the lightest addit
 ional scalar\, pseudoscalar and charged scalar can have substantial decays
  into electrons and muons (in contrast to the usual leptonic decays into t
 aus). An interesting signature in the neutral sector would be the producti
 on\, through vector boson fusion\, of a pair of scalars\, each of which de
 cays into an electron or muon pair.\n\nhttp://indico.fuw.edu.pl/contributi
 onDisplay.py?contribId=23&sessionId=15&confId=66
LOCATION:University of Warsaw\, Faculty of Physics 0.06
URL:http://indico.fuw.edu.pl/contributionDisplay.py?contribId=23&sessionId
 =15&confId=66
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