4,388 research outputs found
Towards the fate of natural composite Higgs model through single search at the 8 TeV LHC
We analyze the observational potential of single production in both the
and decay channels at 8 TeV
LHC using an integrated luminosity of 25 . Our analysis is
based on a simplified model with minimal coset in which the
is a singlet of the unbroken SO(4). The single production, as a
consequence of electroweak symmetry breaking, is less kinematically suppressed,
associated with a light forward jet and has boosted decay products at the 8 TeV
LHC. Therefore it provides the most promising channel in searching for a heavy
. We have exploited the above kinematical features and used the jet
substructure method to reconstruct the boosted Higgs in decay channel. It
is shown that a strong constraint on the coupling () at the 95% C. L. can be obtained for GeV.Comment: 22 pages, 8 figures, 5 tables, refs added in v
Type-III two Higgs doublet model plus a pseudoscalar confronted with , muon and dark matter
In this work, we introduce an extra singlet pseudoscalar into the Type-III
two Higgs doublet model (2HDM) which is supposed to solve a series of problems
in the modern particle-cosmology. With existence of a light pseudoscalar, the
excess measured at CMS and as well as the
anomaly could be simultaneously explained within certain parameter spaces that
can also tolerate the data on the flavor-violating processes
and Higgs decay gained at LHC. Within the same
parameter spaces, the DM relic abundance is well accounted. Moreover, the
recently observed Galactic Center gamma ray excess(GCE) is proposed to realize
through dark matter(DM) pair annihilations, and in this work, the scenario of
the annihilation being mediated by the pseudoscalar is also addressed.Comment: 14 pages, 8 figures, version to appear in NP
Probing the CP-even Higgs Sector via in the Natural NMSSM
After the discovery of a Standard Model (SM) like Higgs boson, naturalness
strongly favors the next to the Minimal Supersymmetric SM (NMSSM). In this
letter, we point out that the most natural NMSSM predicts the following CP-even
Higgs sector: (A) is the SM-like Higgs boson with mass
pushed-upward by a lighter with mass overwhelmingly within
; (B) GeV; (C)
has a significant coupling to top quarks and can decay to with a
large branching ratio. Using jet substructure we show that all the three Higgs
bosons can be discovered via at
the 14 TeV LHC. Especially, the LEP-LHC scenario with GeV has a
very good discovery potential.Comment: 5 pages, 2 figures. Some typos corrected and reference adde
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