BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN
BEGIN:VEVENT
SUMMARY:Multi-Higgs Doublet Models
DTSTART:20220622T090000Z
DTEND:20220622T110000Z
DTSTAMP:20260625T200739Z
UID:d8d8ac82-1c96-4f1d-8cd2-a3bac800e9c2
SEQUENCE:1
CREATED:20220620T083344Z
DESCRIPTION:  AbstractThis thesis is aimed at the study of softly-broken $
 A_4$ or $S_4$ 3 Higgs Doublet Models. Regarding these\, two topics are dis
 cussed. In the first they are studied via the introduction of parameters t
 hat softly break the respective symmetries but preserve the directions of 
 the vacuum expectation values of the triplet. Within this regime\, we firs
 t conduct an analysis of the masses of physical states\, highlighting comm
 on properties in the mass spectra of the extended scalar sector. Beyond th
 is\, we focus on the decay properties of these particles\, with the goal o
 f identifying dark matter candidates. We have identified a particular case
  where these candidates are accommodated without any further restrictions 
 on the model.The second topic concerns an adaptation of a geometric method
  so that it suits softly-broken potentials. We discuss aspects to be taken
  into account so that our proposed method can be successful.This is then e
 xemplified in an application to the softly-broken $S_4$ symmetric potentia
 l with general diagonal soft-breaking parameters. We conduct a complete de
 termination of all the possible neutral minima the model can have in these
  circumstances\, as well as necessary conditions for these minima to occur
 .
LAST-MODIFIED:20220620T083344Z
LOCATION:Online
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/multi-higgs-doublet-models
 /
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="6p1gb">  </p><p data-block
 -key="936hg">Abstract</p><p data-block-key="cd71q">This thesis is aimed at
  the study of softly-broken $A_4$ or $S_4$ 3 Higgs Doublet Models. Regardi
 ng these\, two topics are discussed. </p><p data-block-key="a1mnh">In the 
 first they are studied via the introduction of parameters that softly brea
 k the respective symmetries but preserve the directions of the vacuum expe
 ctation values of the triplet. Within this regime\, we first conduct an an
 alysis of the masses of physical states\, highlighting common properties i
 n the mass spectra of the extended scalar sector. Beyond this\, we focus o
 n the decay properties of these particles\, with the goal of identifying d
 ark matter candidates. We have identified a particular case where these ca
 ndidates are accommodated without any further restrictions on the model.</
 p><p data-block-key="5o21a">The second topic concerns an adaptation of a g
 eometric method so that it suits softly-broken potentials. We discuss aspe
 cts to be taken into account so that our proposed method can be successful
 .</p><p data-block-key="4u6sr">This is then exemplified in an application 
 to the softly-broken $S_4$ symmetric potential with general diagonal soft-
 breaking parameters. We conduct a complete determination of all the possib
 le neutral minima the model can have in these circumstances\, as well as n
 ecessary conditions for these minima to occur.</p>
END:VEVENT
END:VCALENDAR