4,911 research outputs found
Spectrum of the charmed and b-flavored mesons in the relativistic potential model
We study the bound states of heavy-light quark-antiquark system in the
relativistic potential model, where the potential includes the long-distance
confinement term, the short-distance Coulomb term and spin-dependent term. The
spectrum of , , , and states with higher orbital quantum
numbers are obtained. Compared with previous results predicted in the
relativistic potential model, the predictions are improved and extended in this
work, more theoretical masses are predicted which can be tested in experiment
in the future.Comment: 10 pages, no figure, 2 tables, more discussion is added. Version to
appear in JHE
Higgs production at future colliders in the Georgi-Machacek model
We study how the dominant single and double SM-like Higgs () production at
future colliders is modified in the Georgi-Machacek (GM) model. On
imposing theoretical, indirect and direct constraints, significant deviations
of -couplings from their SM values are still possible; for instance, the
Higgs-gauge coupling coupling can be corrected by a factor
in the allowed parameter space. For the
Higgs-strahlung and vector boson fusion processes , the cross section could increase by or decrease
by . In the case of associated production with a top quark pair
, the cross section can be enhanced up to several times
when the custodial triplet scalar is resonantly produced. In the
meanwhile, the double Higgs production can be
maximally enhanced by one order of magnitude at the resonant
production. We also include exclusion limits expected from future LHC runs at
higher energy and luminosity and discuss their further constraints on the
relevant model parameters. We find that the GM model can result in likely
measurable deviations of Higgs production from the SM at future
colliders.Comment: 31 pages, 17 figures, published in JHE
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