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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The most recent results of the top-quark mass measurements at the Tevatron at Fermilab are presented. Data were collected in proton-antiproton collisions at sqrt{s}=1.96 TeV by the CDF and D0 experiments. Top quark mass measurements in the lepton+jets, dilepton and alljet final states as well as their combination and the extraction of the mass from the cross-section measurement are presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The most recent results of the top-quark mass measurements at the Tevatron at Fermilab are presented. Data were collected in proton-antiproton collisions at sqrt{s}=1.96 TeV by the CDF and D0 experiments. Top quark mass measurements in the lepton+jets, dilepton and alljet final states as well as their combination and the extraction of the mass from the cross-section measurement are presented.
Author: Publisher: ISBN: Category : Languages : en Pages : 4
Book Description
First observed in 1995, the top quark is the third-generation up-type quark of the standard model of particle physics (SM). The CDF and D0 collaborations have analyzed many t{bar t} events produced by the Tevatron collider, studying many properties of the top quark. Among these, the mass of the top quark is a fundamental parameter of the SM, since its value constrains the mass of the yet to be observed Higgs boson. The analyzed events were used to measure the mass of the top quark m{sub t} ≃ 173.2 GeV/c2 with an uncertainty of less than 1 GeV/c2. We report on the latest top mass measurements at the Tevatron, using up to 6 fb−1 of data for each experiment.
Author: Publisher: ISBN: Category : Languages : en Pages : 8
Book Description
Top quark mass measurements from the Tevatron using up to 2.0 fb−1 of data are presented. Prospects for combined Tevatron measurements by the end of Run II are discussed.
Author: Joao Guimaraes da Costa Publisher: ISBN: Category : Languages : en Pages : 4
Book Description
The authors report on the latest experimental measurements of the top quark mass by the CDF and D0 Collaborations at the Fermilab Tevatron. They present a new top mass measurement using the t{bar t} events collected by the D0 Collaboration in Run I between 1994 and 1996. This result is combined with previous measurements to yield a new world top mass average. They also describe several preliminary results using up to 193 pb{sup -1} of t{bar t} events produced in {bar p}p collisions at {radical}s = 1.96 TeV during the Run II of the Tevatron.
Author: Gueorgui V. Velev Publisher: ISBN: Category : Languages : en Pages : 19
Book Description
The latest top quark mass measurements by the CDF and D0 experiments are presented here. The mass has been determined in the dilepton (t{bar t} {yields} e{mu}, ee, {mu}{mu} + jets + E{sub T}) and lepton plus jets (t{bar t} {yields} e or {mu} + jets + E{sub T}) final states. The most accurate single result from lepton plus jets channel is 173.5{sub -3.6}{sup +3.7}(stat. + Jet Energy Scale Systematic) {+-} 1.3(syst.) GeV/c{sup 2}, which is better than the combined CDF and D0 Run I average. A preliminary and unofficial average of the best experimental Run II results gives M{sub top} = 172.7 {+-} 3.5 GeV/c{sup 2}.
Author: Publisher: ISBN: Category : Languages : en Pages : 6
Book Description
New measurements of the top quark mass from the Tevatron are presented. Combined with previous results, they yield a preliminary new world average of m{sub top} = 170.9 ± 1.1(stat) ± 1.5(syst)GeV/c2 and impose new constraints on the mass of the Higgs boson.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We present two new measurements of the top-quark mass. Using the same methodology applied in Run I, the CDF experiment uses 72 pb−1 of Run II data to measure M{sub top} = 171.2 " 13.4{sub stat} " 99{sub syst} GeV/c2. On the other hand, the D0 experiment, using 125 pb−1 from Run I, and applying a new method that extracts information from data through a direct calculation of a probability for each event, obtains M{sub top} = 180.1 " 3.6{sub stat} " 4.0{sub syst} GeV/c2.
Author: Publisher: ISBN: Category : Languages : en Pages : 13
Book Description
We review the measurements of the top quark mass by the CDF and D0 collaborations using Run I data in excess of 1.00 pb−1. The D0 collaboration has recently updated its measurement of the top quark mass in the lepton + jets channel. The world average of the top quark mass from the CDF and D0 measurements in the lepton + jets channel now stands at 175.6 " 5.5 GeV/c2.
Author: Publisher: ISBN: Category : Languages : en Pages : 5
Book Description
The mass of the top quark (m{sub top}) is a fundamental parameter of the standard model (SM). Currently, its most precise measurements are performed by the CDF and D0 collaborations at the Fermilab Tevatron p{bar p} collider at a centre-of-mass energy of √s = 1.96 TeV. We review the most recent of those measurements, performed on data samples of up to 8.7 fb−1 of integrated luminosity. The Tevatron combination using up to 5.8 fb−1 of data results in a preliminary world average top quark mass of m{sub top} = 173.2 ± 0.9 GeV. This corresponds to a relative precision of about 0.54%. We conclude with an outlook of anticipated precision the final measurement of m{sub top} at the Tevatron.
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Author: Joao Guimaraes da Costa
Author: Gueorgui V. Velev
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