6,947 research outputs found

    Diffractive and exclusive measurements at CDF

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    Experimental results from the CDF experiment at the Tevatron in ppˉp\bar{p} collisions at s\sqrt{s}=1.96 TeV are presented on the diffractive structure function at different values of the exchanged momentum transfer squared in the range 0<Q2<10,0000<Q^2<10,000 GeV2^2, on the four-momentum transfer ∣t∣|t| distribution in the region 0<∣t∣<10<|t|<1 GeV2^2 for both soft and hard diffractive events up to Q2≈4,500Q^2\approx 4,500 GeV2^2, and on the first experimental evidence of exclusive production in both dijet and diphoton events. A novel technique to align the Roman Pot detectors is also presented

    Recent Results from CDF

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    We present the latest results from the CDF experiment at the Tevatron Collider in \ppbar collisions at s=1.8\sqrt{s} = 1.8 TeV. The large data sample collected during Run 1, from 1992 until 1995, allows measurements in many domains of high-energy physics. Here, we report on the first measurement of top quark cross section. We also report on searches for the so-far elusive Higgs boson, and for SUSY, through searches for direct production of top and bottom scalar quarks. Finally, we outline the prospects for the physics during the upcoming Run 2, ready to start in the upcoming year 2000

    Top quark physics experimental results at the LHC: Cross section and mass measurements with the CMS experiment

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    The top quark, the heaviest known elementary particle discovered at the Fermilab Tevatron almost exactly twenty years ago, has taken a central role in the study of fundamental interactions. Its large mass suggests that it may play a special role in Nature. With approximately 25 fb −1 of data collected by the CMS experiments at the Large Hadron Collider in Run 1 (2010–2012), top quark physics is at a turning point from first studies to precision measurements with sensitivity to new physics processes. This report summarizes the latest experimental results on top quark production cross section and mass measurements

    Top quark mass measurement at the Large Hadron Collider

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    Measurements of the top quark mass in proton-proton collisions at the LHC at √s = 7TeV are presented from data collected by the CMS and ATLAS experiments. The t¯t samples are reconstructed in the lepton+jet final state, where events are required to have exactly one isolated electron or muon and at least four jets, and in the dilepton final state, with two leptons, at least two jets, and missing transverse energy. The different methods used for the top quark measurement are described. The indirect top quark mass determination from the cross section and the measurement of the top-antitop quark mass difference are also presented

    Impacts of scientific approaches on rock art research. Global perspectives

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    The current volume includes a selection of the papers presented at this session, as well as some new invited papers by leading international researchers. These supplementary papers were added to achieve a more global representation and to complement some of the topics addressed in this volume

    The CDF MiniPlug Calorimeters at the Tevatron

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    Two MiniPlug calorimeters, designed to measure the energy and lateral position of particles in the pseudorapidity region of 3.6<|eta|<5.1 of the CDF detector, have been installed as part of the Run II CDF upgrade at the Tevatron collider. Detector performance and first results from pˉp\bar pp collision data are presented.Comment: Presented at `Frontier Detectors for Frontier Physics; 9th Pisa Meeting on Advanced Detectors', Biodola, Italy, 25-31 May 2003. 2 page

    Product Differentiation Costs and Global Competition

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    The growing competitive intensity on the markets determines the emergence of competition costs that are expressed at a corporate level and have implicit repercussions for the supply system. This type of costs makes it possible to identify a close link between competition costs and supply differentiation costs. Classification by competitive intensity presupposes that the analysis performed identifies the classification of company costs as the discriminating element, in terms of the competitive pressure of the context in which the firm operates. The emergence of competition costs is linked to an attempt to squeeze them as an aspect of vertical, or more specifically, horizontal cooperation strategies.Product Differentiation; Differentiation Costs; Over-Supply; Global Competition; Marketing; Market-Driven Management; Global Corporations; Global Markets DOI:http://dx.doi.org/10.4468/2005.1.06garbelli
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