83 research outputs found
Higgs-portal Scalar Dark Matter: Scattering Cross Section and Observable Limits
The simplest Higgs-portal dark matter model is studied in the light of dark
matter self-interacting effects on the formation of large scale structures. We
show the direct detection limits on the resonant and large mass regions.
Finally, we also compare these limits with those at the LHC and Xenon 1T
experiments.Comment: Published version, references adde
Collider Signatures of Higgs-portal Scalar Dark Matter
In the simplest Higgs-portal scalar dark matter model, the dark matter mass
has been restricted to be either near the resonant mass () or in a
large-mass region by the direct detection at LHC Run 1 and LUX. While the
large-mass region below roughly 3 TeV can be probed by the future Xenon1T
experiment, most of the resonant mass region is beyond the scope of Xenon1T. In
this paper, we study the direct detection of such scalar dark matter in the
narrow resonant mass region at the 14 TeV LHC and the future 100 TeV hadron
collider. We show the luminosities required for the exclusion and
discovery.Comment: 11 pages, 4 figures; v2: minor changes, references added, journal
versio
Six Top Messages of New Physics at the LHC
Six top signatures provide a novel probe of new physics. We discuss
production of six top quarks as the decay products of a pair of top partners in
the setting of a composite Higgs model, and argue that the six top signal may
generically provide one of the first final states to show a discrepancy. We
construct an analysis based on quantities such as and the numbers of jets
which are tagged as boosted tops, s, or containing -tags, and show that
the LHC with 3~ab can discover top partners with masses up to around 2.5
TeV in the six top signature.Comment: 15 pages, 6 figures, and 2 table
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