262 research outputs found
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
Fractional revival on semi-Cayley graphs over abelian groups
In this paper, we investigate the existence of fractional revival on
semi-Cayley graphs over finite abelian groups. We give some necessary and
sufficient conditions for semi-Cayley graphs over finite abelian groups
admitting fractional revival. We also show that integrality is necessary for
some semi-Cayley graphs admitting fractional revival. Moreover, we characterize
the minimum time when semi-Cayley graphs admit fractional revival. As
applications, we give examples of certain Cayley graphs over the generalized
dihedral groups and generalized dicyclic groups admitting fractional revival
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