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Page : 10 pages
File Size : 32,83 MB
Release : 1998
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We present the latest results on electroweak physics obtained from the analysis of p{anti p} collisions at (square root)s=1.8 TeV. The large data samples collected with the CDF and D0 detectors at the Tevatron collider allow measurements of the top quark mass to a 3% accuracy and of the W boson to a 0.1% accuracy. Many precision measurements that test the Standard Model and probe its possible extensions are also described.
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Page : 22 pages
File Size : 43,12 MB
Release : 1997
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Using data collected from p{anti p} collisions at the Fermilab Tevatron collider the latest electroweak results from the CDF and D0 collaborations are presented. Measurements of the W and Z boson production cross sections are detailed, which in addition to testing the Standard Model in their own right also allow a determination of the W boson width. Analyses of Drell-Yan production above the Z pole allow limits to be placed on the existence of neutral gauge bosons beyond the Standard Model and parton compositeness. A first measurement of the forward backward asymmetry of the Drell-Yan lepton pairs above the Z pole is also presented. The latest measurements from both collaborations of the W mass are described, which when averaged yield a W mass value of 80.375 " 0.100 GeV/c2.
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Page : 4 pages
File Size : 37,25 MB
Release : 2009
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W and Z bosons are mainly produced via quark-antiquark annihilations at the Fermilab Tevatron collider. Precision measurements with these gauge bosons provide us with high precision tests of the Standard Model (SM) as well as indirect search for possible new physics beyond the SM. I present the recent electroweak measurements related to single W, Z boson and diboson productions from the CDF and D0 experiments at the Fermilab Tevatron collider.
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Page : pages
File Size : 33,74 MB
Release : 2001
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This writeup is an introduction to some of the experimental issues involved in performing electroweak and b physics measurements at the Fermilab Tevatron. In the electroweak sector, we discuss W and Z boson cross section measurements as well as the measurement of the mass of the W boson. For b physics, we discuss measurements of B°/{bar B}° mixing and CP violation. This paper is geared towards nonexperts who are interested in understanding some of the issues and motivations for these measurements and how the measurements are carried out.
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Page : pages
File Size : 44,19 MB
Release : 2011
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The Tevatron collider has been remarkably successful and has so far delivered more than 11 fb−1 of data to both the CDF and D0 experiments. Though the LHC has replaced the Tevatron as the world's most powerful collider, years of detector calibration, the huge size of the dataset and the nature of pp collisions will keep the Tevatron competitive in many selected topics in the near future. More than 10 fb−1 of data has been collected by each experiment. Good understanding of the detector performance has been demonstrated by the high precision W boson mass (?M{sub W} = 31 MeV) and top quark mass (?M{sub t} = 1.06 GeV) measurements. We report the latest electroweak and QCD results from both experiments. Most analyses presented here used 4-6 fb−1 of data.
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Page : 20 pages
File Size : 35,35 MB
Release : 1994
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Page : pages
File Size : 18,94 MB
Release : 2001
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The D0 experiment collected[approx] 15 pb[sup[minus]1] in run 1A (1992--1993) of the Fermilab Tevatron Collider using p[anti p] collisions at[radical]s= 1.8 TeV and[approx] 89 pb[sup[minus]1] in run 1B (1994--1995). Results from analyses of electroweak interactions are presented including the W and Z production cross sections and the W width measurements. From the run 1A data sample of W[yields] ev and Z[yields] ee decays, the W boson mass was measured to be 80.350[+-] 0.270 GeV/c[sup 2]. Analyses which measured di-boson production are presented together with limits that were placed on the coupling parameters.
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Page : 8 pages
File Size : 34,5 MB
Release : 2011
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The most recent Electroweak results from the Tevatron are presented. The importance of precise Standard Model measurements in the Higgs sector, quantum chromodynamics and searches for new physics is emphasized. Analyzed data correspond to 1-7 fb−1 of integrated luminosity recorded by the CDF and D0 detectors at the Tevatron Collider at √s = 1.96 TeV during the period between 2002-2010. The main goal of the Electroweak (EW) physics is to probe the mechanism of the EW symmetry breaking. An important aspect of these studies is related to precise measurements of the Standard Model (SM) parameters and tests of the SU(2) x U(1) gauge symmetry. Deviations from the SM may be indicative of new physics. Thus, the interplay between the tests of the 'standard' physics and searches for a 'nonstandard' physics is an important aspect of the EW measurements. The observables commonly used in these measurements are cross sections, gauge boson couplings, differential distributions, asymmetries, etc. Besides, many EW processes represent a non-negligible background in a Higgs boson and top quark production, and production of supersymmetric particles. Therefore, the complete and detailed understanding of EW processes is a mandatory precondition for early discoveries of very small new physics signals. Furthermore, several EW analyses represent a proving ground for analysis techniques and statistical treatments used in the Tevatron Higgs searches.
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Page : 17 pages
File Size : 34,76 MB
Release : 1996
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Page : pages
File Size : 24,96 MB
Release : 2004
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The Run II physics program of CDF and D0 has just begun with the first 72 pb−1 of analysis quality data collected at the center-of-mass energy of 1.96 TeV. The Electroweak measurements are among the first and most important benchmarks for the best understanding of the detectors and testing the Standard Model. We present measurements of the W and Z inclusive cross sections and decays asymmetries, recent results in di-boson physics and searches for new physics which make use of distinct electroweak signatures.
