Read and Download eBook Full
Author:
Publisher:
Published: 2007
Total Pages: 4
ISBN-13:
DOWNLOAD EBOOKThe top quark mass is interesting both as a fundamental parameter of the standard model as well as an important input to precision electroweak tests. The CDF Collaboration has measured the top quark mass with high precision in all decay channels with complementary methods. A combination of the results from CDF gives a top quark mass of 170.5±1.3(stat.)±1.8(syst.) GeV/c2.
Author:
Publisher:
Published: 2008
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 2012
Total Pages:
ISBN-13:
DOWNLOAD EBOOKWe present a precision measurement of the top-quark mass using the full sample of Tevatron √s = 1.96 TeV proton-antiproton collisions collected by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb−1. Using a sample of t{bar t} candidate events decaying into the lepton+jets channel, we obtain distributions of the top-quark masses and the invariant mass of two jets from the W boson decays from data. We then compare these distributions to templates derived from signal and background samples to extract the top-quark mass and the energy scale of the calorimeter jets with in situ calibration. The likelihood fit of the templates from signal and background events to the data yields the single most-precise measurement of the top-quark mass, mtop = 172.85 ± 0.71 (stat) ± 0.85 (syst) GeV/c2.
Author:
Publisher:
Published: 2004
Total Pages:
ISBN-13:
DOWNLOAD EBOOKCDF has resumed the top quark mass measurement with upgraded detectors and Tevatron complex. High statistics should allow us to determine the top mass with an uncertainty of a few GeV/c2 by the end of Run II. The current measured value, using an integrated luminosity of (almost equal to) 108 pb−1, is 177.5{sub -9.4}{sup +12.7} (stat.) " 7.1(syst.) GeV/c2 (lepton + jets with one b-jet tagged mode: the current best mode), which is consistent with RunI measurements.
Author:
Publisher:
Published: 1996*
Total Pages: 296
ISBN-13:
DOWNLOAD EBOOKAuthor: Kostas Kordas
Publisher:
Published: 2006
Total Pages: 7
ISBN-13:
DOWNLOAD EBOOKWe report on recent measurements of the top quark mass using t{bar t} candidate events selected in {approx_equal} 320 pb{sup -1} of data from the ''Run II'' operation period of the Tevatron p{bar p} collider. More emphasis is given on the best single measurement to date (M{sub top} = 173.5{sub -3.8}{sup +3.9} GeV/c{sup 2}), provided by CDF using the ''lepton plus jets'' channel, where one W decays to a lepton-neutrino pair and the other into quarks (top quarks decay to Wb almost 100% of the time).
Author: Anyes Taffard
Publisher:
Published: 2006
Total Pages: 4
ISBN-13:
DOWNLOAD EBOOKWe report on the measurements of the W boson and top-quark masses with the CDF II detector in p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron. We highlight the major features and uncertainties for the W mass measurement. The top-quark mass measurements are presented in each t{bar t} decay channels. The combination of the most precise measurements from CDF to date leads to M{sub top} = 172.4 {+-} 1.5(stat.) {+-} 2.2(sys.) GeV/c{sup 2}, corresponding to a relative uncertainty of 1.5%.
Author: Arnulf Quadt
Publisher: Springer Science & Business Media
Published: 2007-08-16
Total Pages: 166
ISBN-13: 3540710604
DOWNLOAD EBOOKThis will be a required acquisition text for academic libraries. More than ten years after its discovery, still relatively little is known about the top quark, the heaviest known elementary particle. This extensive survey summarizes and reviews top-quark physics based on the precision measurements at the Fermilab Tevatron Collider, as well as examining in detail the sensitivity of these experiments to new physics. Finally, the author provides an overview of top quark physics at the Large Hadron Collider.
Author: Christopher S. Hill
Publisher:
Published: 2004
Total Pages: 4
ISBN-13:
DOWNLOAD EBOOKThe top quark, with its extraordinarily large mass (nearly that of a gold atom), plays a significant role in the phenomenology of EWSB in the Standard Model. In particular, the top quark mass when combined with the W mass constrains the mass of the as yet unobserved Higgs boson. Thus, a precise determination of the mass of the top quark is a principal goal of the CDF and D0 experiments. With the data collected thus far in Runs 1 and 2 of the Tevatron, CDF and D0 have measured the top quark mass in both the lepton+jets and dilepton decay channels using a variety of complementary experimental techniques. The author presents an overview of the most recent of the measurements.
