6,509 research outputs found
Possibility of observing MSSM charged Higgs in association with a W boson at LHC
Possibility of observing associated production of charged Higgs and W boson
in the framework of MSSM at LHC is studied. Both leptonic and hadronic decays
of W boson are studied while the charged Higgs boson is considered to decay to
a lepton and a neutrino. Therefore two search categories are defined
based on the leptonic and hadronic final states, i.e.
and where or and is a light jet from
decay. The discovery chance of the two categories is evaluated at an
integrated luminosity of 300 \invfb at LHC. It is shown that both leptonic and
hadronic final states have the chance of discovery at high \tanb. Finally
and contours are provided for both search categories.Comment: 20 pages, 19 figure
Dark side of the universe in the Stephani cosmology
We investigate the late time acceleration of the universe in the context of
the Stephani model. This solution generalizes those of
Friedmann-Lemaitre-Robertson-Walker (FLRW) in such a way that the spatial
curvature is a function of of time. We show that the inhomogeneity of the
models can lead to an accelerated evolution of the universe that is analogous
to that obtained with FLRW models through a cosmological constant or any exotic
component for matter.Comment: 8 pages, 2 figure, many improvements; to appear in European Physical
Journal
Physical characteristics of subglacial tills
A regional database of the physical properties of glacial
tills has been interrogated to produce characteristic design
values and baseline construction values. Glacioterrestrial
glacial till, one of the most distributed deposits in
the world, is typically a heterogeneous mixture of clays,
silts, sands, gravels and cobbles, which can contain remnants of earlier till including glaciolacustrine and fluvioglacial deposits that have been gravitationally compacted and sheared. This results in a complex deposit, which is spatially variable both in composition and fabric to the extent that the selection of design profiles is challenging.
A study of the intrinsic properties of the tills in the
North East of England together with a statistical analysis
has led to the identification of two distinctly different,
heavily overconsolidated tills that have profiles of
strength, water content and density that lead to characteristic values based on the regional database and baseline values based on the local database that provide a
priori knowledge for future investigations. This a priori
knowledge has been used to determine the characteristic
and baseline values for a new dataset from the region
after demonstrating that the data fit with the regional
database
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