3,198 research outputs found
SM Higgs boson searches in the early ATLAS data
ATLAS exclusion and discovery potentials of Standard Model Higgs boson
searches at the LHC at 14 TeV, 10 TeV and 7 TeV center-of-mass energy are
reviewed. For a LHC center-of-mass energy of 7 TeV and integrated luminosity of
1 fb, contributions from the important decay channels \Hboson
\rightarrow \Wboson\Wboson^{(*)} \rightarrow \ell\nu\ell\nu, \Hboson
\rightarrow \Zboson\Zboson^{(*)} \rightarrow \ell\ell\ell\ell and \Hboson
\rightarrow \gamma\gamma are considered, based on recent full Monte Carlo
simulations at 14 and 10 TeV and the cross-section rescaling for the 7 TeV
center-of-mass energy. First measurements of backgrounds to Standard Model
Higgs boson search are also presented.Comment: 6 pages, 2 figures, to appear in the Proceedings of IHEPLHC10
Conference (Protvino, Russia, October 2010
Quasi-Homogeneous Backward-Wave Plasmonic Structures: Theory and Accurate Simulation
Backward waves and negative refraction are shown to exist in plasmonic
crystals whose lattice cell size is a very small fraction of the vacuum
wavelength (less than 1/40th in an illustrative example). Such
``quasi-homogeneity'' is important, in particular, for high-resolution imaging.
Real and complex Bloch bands are computed using the recently developed
finite-difference calculus of ``Flexible Local Approximation MEthods'' (FLAME)
that produces linear eigenproblems, as opposed to quadratic or nonlinear ones
typical for other techniques. FLAME dramatically improves the accuracy by
incorporating local analytical approximations of the solution into the
numerical scheme.Comment: 4 pages, 3 figure
Do neutrino oscillations allow an extra phenomenological parameter?
The quantity introduced recently in the phenomenological description of
neutrino oscillations is in fact not a free parameter, but a fixed number.Comment: 2 pages, LaTeX 2e style articl
Surface waves in three-dimensional electromagnetic composites and their effect on homogenization
Reflection and transmission of electromagnetic waves at the boundaries of periodic composites (electromagnetic/optical metamaterials) depends in general on both bulk and surface waves. We investigate the interplay of these two contributions using three-dimensional full-wave numerical simulations and a recently developed non-asymptotic homoge-nization theory. © 2013 Optical Society of America.postprin
Mesh shape and anisotropic elements : theory and practice
The relationship between the shape of finite elements in unstructured meshes and the error that results in the numerical solution is of increasing importance as finite elements are used to solve problems with highly anisotropic and, often, very complex solutions. This issue is explored in terms of a priori and a posteriori error estimates, and through consideration of the practical issues associated with assessing element shape quality and implementing an adaptive finite element solver
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