3,917 research outputs found
Exploring the Inert Doublet Model through the dijet plus missing transverse energy channel at the LHC
In this study of the Inert Doublet Model (IDM), we propose that the dijet +
missing transverse energy channel at the Large Hadron Collider (LHC) will be an
effective way of searching for the scalar particles of the IDM. This channel
receives contributions from gauge boson fusion, and channel production,
along with contributions from associated production. We perform the
analysis including study of the Standard Model (SM) background with assumed
systematic uncertainty, and optimise the selection criteria employing suitable
cuts on the kinematic variables to maximise the signal significance. We find
that with high luminosity option of the LHC, this channel has the potential to
probe the IDM in the mass range of up to about 400 GeV, which is not accessible
through other leptonic channels. In a scenario with light dark matter of mass
about 65 GeV, charged Higgs in the mass range of around 200 GeV provides the
best possibility with a signal significance of about at an integrated
luminosity of about 3000 fb.Comment: 16 pages, 3 figures, pdflatex; tables modified with new selection
criteria to accommodate systematics. version to appear in PL
Intramuscular (infiltrating) Lipoma
Intraoral lipomas are benign and relatively rare tumors, although they occur with higher frequencies in other areas, most especially the back, abdomen and shoulders of adults. They have no gender predilection and predominantly affect the buccal mucosa. This paper describes a case of intramuscular (infiltrating) lipoma on the buccal mucosa of a 60-year old male which is relatively rare when compared to simple lipoma of buccal mucosa, and review pertinent literature
Focusing by Plano-Concave lens using Negative Refraction
We demonstrate focusing of a plane microwave by a plano-concave lens
fabricated from a photonic crystal (PhC) having negative refractive index and
left-handed electromagnetic properties. An inverse experiment, in which a plane
wave is produced from a source placed at the focal point of the lens is also
reported. A frequency dependent negative refractive index, is obtained for the
lens from the experimental data which matches well with that determined from
band structure calculations
NLO-QCD Corrections to Dilepton Production in the Randall-Sundrum Model
The dilepton production process at hadron colliders in the Randall-Sundrum
(RS) model is studied at next-to-leading order in QCD. The NLO-QCD corrections
have been computed for the virtual graviton exchange process in the RS model,
in addition to the usual gamma, Z-mediated processes of standard Drell-Yan.
K-factors for the cross-sections at the LHC and Tevatron for differential in
the invariant mass, Q, and the rapidity, Y, of the lepton pair are presented.
We find the K-factors are large over substantial regions of the phase space.Comment: 24 pages, 12 figure
Resonance statistics in a microwave cavity with a thin antenna
We propose a model for scattering in a flat resonator with a thin antenna.
The results are applied to rectangular microwave cavities. We compute the
resonance spacing distribution and show that it agrees well with experimental
data provided the antenna radius is much smaller than wavelengths of the
resonance wavefunctions.Comment: 10 pages LaTeX source file with one ps figure; to appear in
Phys.Lett.
Isospectrality in Chaotic Billiards
We consider a modification of isospectral cavities whereby the classical
dynamics changes from pseudointegrable to chaotic. We construct an example
where we can prove that isospectrality is retained. We then demonstrate this
explicitly in microwave resonators.Comment: 5 pages, 7 figure
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