2,163 research outputs found
Exotic Physics
A selection of results for searches for exotic physics at the LHC are
presented. These include a search for massive resonances, dark matter with a
high energy jet in association with large missing transverse momentum,
long-lived neutral particles, and narrow dijet resonances. The results are
based on 20/fb of LHC proton-proton collisions at sqrt(s) = 8 TeV taken with
the CMS detector.Comment: 8 pages, 7 figures. Presented at the XII LISHEP Workshop on High
Energy Physics, Manaus, Brazil, 2nd-9th August 201
Semileptonic B-Meson Decays at BaBar
Presented are selected results of semileptonic B decays at BaBar. Two
measurements of the Cabibbo-Kobayashi-Maskawa matrix element are
reported. One using moments of the hadronic-mass spectrum in inclusive decays, and the other, exclusive decays. These results are based on data samples of 232
(inclusive ) and 460 (exclusive \var{B}
\to D \ell^- \bar{\nu}_{\ell}) million decays,
recorded by the detector at the PEP-II -storage rings.
Semileptonic B decays are identified by requiring a lepton ( or ) in
events tagged with a full reconstruction of one of the B mesons in the
pair.Comment: 4 pages, 3 figures. Presented at the 14th Lomonosov Conference on
Elementary Particle Physics, Moscow, Russia, 19th - 25th August 200
A parameter uniform fitted mesh method for a weakly coupled system of two singularly perturbed convection-diffusion equations
In this paper, a boundary value problem for a singularly perturbed linear
system of two second order ordinary differential equations of convection-
diffusion type is considered on the interval [0, 1]. The components of the
solution of this system exhibit boundary layers at 0. A numerical method
composed of an upwind finite difference scheme applied on a piecewise uniform
Shishkin mesh is suggested to solve the problem. The method is proved to be
first order convergent in the maximum norm uniformly in the perturbation
parameters. Numerical examples are provided in support of the theory
3rd generation SUSY searches at CMS
The latest results on searches for stop and sbottom squarks are presented.
Searches for direct squark production in a variety of decay channels are
reviewed. The results are based on 19.5/fb of LHC proton-proton collisions at
sqrt = 8 TeV taken with the CMS detector.Comment: 7 pages, 5 figures. Presented at the 2014 Phenomenology Symposium,
University of Pittsburgh, PA, USA, 5th-7th May 201
Determination of |Vub| using the lepton energy spectrum in events tagged with a fully reconstructed B meson
PhDWe present measurements of partial branching fractions for the inclusive semileptonic decay
of B ! Xu` (` = e or ) leading to the determination of the CKM matrix element jVubj.
This analysis is based on a sample of 460 million BB events recorded at the (4S) resonance
at the BABAR detector.
We select B ! Xu` events using the energy spectrum of the lepton (E`) in an event
where one of the B-mesons is fully reconstructed. We measure partial branching fractions
in restricted regions of the E` spectrum, which are translated into values of jVubj using four
theoretical approaches. We calculate the arithmetic mean, using the results from the four
theoretical approaches at E` > 1:5 GeV resulting in: jVubj = (4:68+0:31
0:32) 103. The analysis
presented in this thesis is the rst time a measurement of jVubj has been performed using the
E` spectrum in events tagged with a fully reconstructed B meson
SUSY searches in CMS
The latest results from CMS on searches for supersymmetry are presented.
Searches involving all-hadronic final states with jets and missing transverse
energy, and in final states including one or more isolated leptons are
discussed. The results are based on 19.5/fb of LHC proton-proton collisions at
sqrt = 8 TeV taken with the CMS detector.Comment: 7 pages, 5 figures. Presented at the 20th International Symposium on
Particles, Strings and Cosmology, Warsaw, Poland, 22nd-27th June 201
7D-Grid-AI-Technology: A technology that translates enzymes from a computer to business with limited lab experiments
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