449 research outputs found

    Summary of the Supersymmetry Working Group

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    We summarize the results obtained by the Supersymmetry Working Group at the 1996 Snowmass Workshop.Comment: Latex2e, 13 page

    Mass Determination Method for the Right and Left Selectron Above Production Threshold

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    The determination of the masses of Supersymmetric particles such as the Selectron for energies above threshold using the energy end-points method is subject to signal deconvolution difficulties and to Standard Model and Supersymmetric backgrounds. The important features of Right and Left Selectron production are used to design an experimentally robust method both for determining the Left and Right Selectron masses, the Neutralino mass and for suppresing backgrounds. The mass resolution is an order of magnitude better than in previous methods. Additional features, such as the determination of the relative leptonic branching ratios of the selectron decay are present in the method.Comment: 4 pages in RevTex (Latex) format and 4 figures in eps forma

    Differential cross section measurements for the production of a W boson in association with jets in proton‚Äďproton collisions at ‚ąös = 7 TeV

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    Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript ‚ąí1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

    Juxtaposing BTE and ATE ‚Äď on the role of the European insurance industry in funding civil litigation