1,721,333 research outputs found
Results on the search for the Standard Model Higgs Boson at CMS
No full textA summary of the results from searches for the Standard Model Higgs Boson
in the CMS experiment at LHC with data collected from proton-proton
collisions at is presented.
The Higgs boson is searched in a multiplicity of decay channels
using data samples corresponding to integrated luminosities in the
range 4.6-4.8~\invfb. The investigated mass range is 110-600~\GeV.
Results are reported for each channel as well as for their combination
Diboson production at CMS
No full textWe present an analysis strategy based on Monte Carlo simulations for measuring the WW and WZ production cross sections in pp collisions with the CMS detector. We describe suitable requirements for background reduction and data-driven methods to estimate the remaining backgrounds. We report the event yields and statistical and systematic uncertainties that we expect to achieve with a few hundred inverse picobarns
CMS Data preparation for Run II
No full textThe Run II of the Large Hadron Collider will confront us with new challenges, mainly due to the higher number of interactions per bunch crossing and the reduced time distance between bunches. In order to be ready for the beginning of the run, in view of an early discovery, the CMS collaboration is currently evolving the infrastructure established during Run I to monitor the data quality, to validate the progresses on detector simulation, event reconstruction, physics objects definition, and to handle large production of simulated events. This contribution covers the development and operational aspects of data preparation at CMS for Run II and describes how the experience gained from Run I is serving the planning of the physics program for Run II
Measurement of t-channel single top quark production in pp collisions
No full textMeasurements of t-channel single top quark production in proton-proton collisions at the LHC at center-of-mass energies of 7 and 8 TeV, using data collected with the CMS experiment during the years 2011 and 2012, are presented. The analyses consider final states where the W boson from the top quark decays into electron-neutrino or muon-neutrino, and makes use of kinematic characteristics of electroweak single top production for the separation of signal from backgrounds using multivariate methods. The results are compared with the most precise Standard Model theory predictions. Measurements of top/anti-top cross section ratio and of various differential single top quark production cross sections are also presented
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