Hi all,
we have a cosmology seminar on Friday (26th of July) at 12pm in Huxley room 503 at Imperial College. The speaker is Kimmo Kainulainen (Jyvaskyla). He will talk about
Non-supersymmetric Dark matter, baryogenesis, naturality and unification
ABSTRACT:
Dark Matter detection experiments are currently reaching sensitivity that,
combined with the collider constraints, allow to rule out (or find) most of
the thermal WIMP candidates. Since no sign of SUSY has been found, non-SUSY
models are becoming more and more interesting. Here I will discuss two types
of non-SUSY DM-models with particle physics motivation. In first model
DM is
a scalar singlet that only interacts with the SM higgs boson (higgs
portal).
Model can also give rise to the observed baryon asymmetry, but only with a
subleading DM component. At small region of parameters 50GeV < m < 62.5GeV,
the singlet can be dominant DM and evade all foreseeable constraints.
Second model is motivated by (minimal walking) technicolor and coupling
constant unification, and it contains a neutral fermion sector reminicent
to neutralinos in the MSSM. This model can provide DM over a wide region of
parameters, some of which will escape detection even by XENON1t.
However, the
model predicts an oblique parameter S > 0.1, and so it may be ruled out by
improved precision electroweak data.
Hope to see you there!
Laura
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