BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:WIMP and SIMP Dark Matter from the Spontaneous Breaking of a Globa
 l Group
DTSTART;VALUE=DATE-TIME:20150618T100000Z
DTEND;VALUE=DATE-TIME:20150618T110000Z
DTSTAMP;VALUE=DATE-TIME:20261004T041225Z
UID:indico-event-2483@indico.ific.uv.es
DESCRIPTION:We propose and study a scalar extension of the Standard Model 
 which respects a ℤ3 symmetry remnant of the spontaneous breaking of a gl
 obal U(1) symmetry. Consequently\, this model has a natural dark matter ca
 ndidate and a Goldstone boson in the physical spectrum. In addition\, the 
 Higgs boson properties are changed with respect to the Standard Model due 
 to the mixing with a new particle. We explore regions in the parameter spa
 ce taking into account bounds from the measured Higgs properties\, dark ma
 tter direct detection as well as measurements of the effective number of n
 eutrino species before recombination. The dark matter relic density is det
 ermined by three classes of processes: the usual self-annihilation\, semi-
 annihilation and purely dark matter 3→2 processes. The latter has been s
 ubject of recent interest leading to the so-called `Strongly Interacting M
 assive Particle' (SIMP) scenario. We show under which conditions our model
  can lead to a concrete realization of such scenario and study the possibi
 lity that the dark matter self-interactions could address the small scale 
 structure problems. In particular\, we find that in order for the SIMP sce
 nario to work\, the dark matter mass must be in the range 7−115 MeV\, wi
 th the global symmetry energy breaking scale in the TeV range.\n\nhttps://
 indico.ific.uv.es/event/2483/
LOCATION:IFIC Seminar Room 1.1.1
URL:https://indico.ific.uv.es/event/2483/
END:VEVENT
END:VCALENDAR