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SUMMARY:Scalar-graviton interconversion via parametric resonance
DTSTART;VALUE=DATE-TIME:20230914T120000Z
DTEND;VALUE=DATE-TIME:20230914T123000Z
DTSTAMP;VALUE=DATE-TIME:20260425T171316Z
UID:indico-contribution-10-64@cern.ch
DESCRIPTION:Speakers: LIN\, Chunshan (Jagiellonian University)\nA novel me
 chanism of interconversion between matter and graviton via parametric reso
 nance will be reported.\n\nhttp://indico.fuw.edu.pl/contributionDisplay.py
 ?contribId=64&sessionId=10&confId=66
LOCATION:University of Warsaw\, Faculty of Physics 0.06
URL:http://indico.fuw.edu.pl/contributionDisplay.py?contribId=64&sessionId
 =10&confId=66
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BEGIN:VEVENT
SUMMARY:Exploring multi-Higgs models with softly broken large discrete sym
 metry groups
DTSTART;VALUE=DATE-TIME:20230914T130000Z
DTEND;VALUE=DATE-TIME:20230914T133000Z
DTSTAMP;VALUE=DATE-TIME:20260425T171316Z
UID:indico-contribution-10-14@cern.ch
DESCRIPTION:Speakers: Dr. DE MEDEIROS VARZIELAS\, Ivo (Instituto Superior 
 Tecnico)\nWe develop methods to study the scalar sector of multi-Higgs mod
 els with large discrete symmetry groups that are softly broken. While in t
 he exact symmetry limit\, the model has very few parameters and can be stu
 died analytically\, proliferation of quadratic couplings in the most gener
 al softly broken case makes the analysis cumbersome. We identify two sets 
 of soft breaking terms which play different roles: those which preserve th
 e symmetric vacuum expectation value alignment\, and the remaining terms w
 hich shift it. Focusing on alignment preserving terms\, we check which str
 uctural features of the symmetric parent model are conserved and which are
  modified. We find remarkable examples of structural features which are in
 herited from the parent symmetric model and which persist even when no exa
 ct symmetry is left. The general procedure is illustrated with the example
  of the three-Higgs-doublet model with the softly broken symmetry group Σ
 (36).\nWe also study multi-Higgs models with a triplet of A4 or S4 symmetr
 y that is softly-broken. Focusing on parameters that softly break the resp
 ective symmetries but preserve the directions of the vacuum expectation va
 lues of the triplet we analyse the masses of physical states and discuss t
 heir decays. In contrast with previously studied symmetries\, we find some
  cases with stable states that are protected by residual symmetries left u
 nbroken by both the soft-breaking parameters and by the vacuum.\n\nhttp://
 indico.fuw.edu.pl/contributionDisplay.py?contribId=14&sessionId=10&confId=
 66
LOCATION:University of Warsaw\, Faculty of Physics 0.06
URL:http://indico.fuw.edu.pl/contributionDisplay.py?contribId=14&sessionId
 =10&confId=66
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dark Coloured Scalars Impact on Single and Di-Higgs Production at 
 the LHC
DTSTART;VALUE=DATE-TIME:20230914T123000Z
DTEND;VALUE=DATE-TIME:20230914T130000Z
DTSTAMP;VALUE=DATE-TIME:20260425T171316Z
UID:indico-contribution-10-84@cern.ch
DESCRIPTION:Speakers: SANTOS\, Rui (ISEL &amp\; CFTC Lisboa)\nTBA\n\nhttp:
 //indico.fuw.edu.pl/contributionDisplay.py?contribId=84&sessionId=10&confI
 d=66
LOCATION:University of Warsaw\, Faculty of Physics 0.06
URL:http://indico.fuw.edu.pl/contributionDisplay.py?contribId=84&sessionId
 =10&confId=66
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