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VERSION:2.0
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SUMMARY:Dark matter in three-Higgs-doublet models with S3 symmetry
DTSTART:20220209T161500Z
DTEND:20220209T180000Z
DTSTAMP:20260909T183621Z
UID:aeae4cba-948f-4337-a358-d1bff207fdc4
SEQUENCE:6
CREATED:20220127T103054Z
DESCRIPTION:Abstract:Models with two or more scalar doublets with discrete
  or global symmetries can have vacua with vanishing vacuum expectation val
 ues in the bases where symmetries are imposed. If a suitable symmetry stab
 ilises such vacua\, these models may lead to interesting dark matter candi
 dates\, provided that the symmetry prevents couplings among the dark matte
 r candidates and the fermions. We analyse three-Higgs-doublet models with 
 an underlying S3 symmetry and discuss all possible vacua.Two models\, with
  and without CP violation\, are explored in detail. In our framework the s
 tability of the dark matter sector results from a Z2 symmetry which surviv
 es the spontaneous symmetry breakdown of the initial S3 symmetry. One of t
 he doublets provides the DM sector\, while the other two are active.
LAST-MODIFIED:20220127T103407Z
LOCATION:Sala de Seminários do DF\,  Pavilhão de Física\, 2º piso
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/dark-matter-in-three-higgs
 -doublet-models-with-s3-symmetry/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="6as7j"><b>Abstract:<br/></
 b></p><p data-block-key="ev5jb">Models with two or more scalar doublets wi
 th discrete or global symmetries can have vacua with vanishing vacuum expe
 ctation values in the bases where symmetries are imposed. If a suitable sy
 mmetry stabilises such vacua\, these models may lead to interesting dark m
 atter candidates\, provided that the symmetry prevents couplings among the
  dark matter candidates and the fermions. We analyse three-Higgs-doublet m
 odels with an underlying S3 symmetry and discuss all possible vacua.<br/><
 br/>Two models\, with and without CP violation\, are explored in detail. I
 n our framework the stability of the dark matter sector results from a Z2 
 symmetry which survives the spontaneous symmetry breakdown of the initial 
 S3 symmetry. One of the doublets provides the DM sector\, while the other 
 two are active.<br/></p>
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