1,890 research outputs found

    CMS Forward Pixels Geometry Simulation

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    The Large Hadron Collider (LHC) is being built at the European Center for Nuclear Research (CERN) to produce collisions between protons and protons at an unprecedented energy of 14 TeV. Compact Muon Solenoid (CMS) is one the five detectors that will be placed on the 17-mile long ring of the LHC, to record data for physics analysis from these collisions. The Forward Pixel Detector of CMS is an integral part of the Tracking system, which would play a key role in addressing the full physics potential of the collected data. This note describes the development of geometry simulation for the Forward Pixel Detecto

    The D0 Run II Detector and Physics Prospects

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    The D0 Detector at Fermilab is currently undergoing an extensive upgrade to participate in the Run II data taking which shall begin on March 1, 2001. The design of the detector meets the requirements of the high luminosity environment provided by the accelerator. This paper describes the upgraded detector subsystems and gives a brief outline of the physics prospects associated with the upgrade.Comment: 7 pages, 3 figures, Submitted to Lake Louise Winter Institute, 2001: Fundamental Interactions to be published in World Scientifi

    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

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an