Download or read book Combination of CDF and D0 Results on the Mass of the Top Quark Using Up to 9 7 Fb 1 at the Tevatron written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combination of CDF and D0 Results on the Mass of the Top Quark Using Up 9 7 written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combination of CDF and D0 Results on the Mass of the Top Quark written by T. Maruyama and published by . This book was released on 2006 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I (1992-1996) measurements with the most recent preliminary Run-II (2001-present) measurements using up to 750 pb{sup -1} of data. Taking correlated uncertainties properly into account the resulting preliminary world average mass of the top quark is M{sub t} = 172.5 {+-} 1.3(stat) {+-} 1.9(syst) GeV/c{sup 2}, which corresponds to a total uncertainty of 2.3 GeV/c{sup 2}. The top-quark mass is now known with a precision of 1.3%--a 20% improvement relative to the previous combination.
Download or read book Combination of CDF and D0 Results on the Mass of the Top Quark written by and published by . This book was released on 2006 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I (1992-1996) measurements with the most recent preliminary Run-II (2001-present) measurements using up to 1 fb−1 of data. Taking correlated uncertainties properly into account the resulting preliminary world average mass of the top quark is M{sub t} = 171.4 ± 1.2(stat) ± 1.8(syst) GeV/c2, which corresponds to a total uncertainty of 2.1 GeV/c2. The top-quark mass is now known with a precision of 1.2%.
Download or read book Combination of CDF and D0 Results on the Mass of the Top Quark Using Up to 5 8 fb 1 of Data written by and published by . This book was released on 2011 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run I (1992--1996) measurements with the most precise published and preliminary Run II (2001--present) measurements using up to 5.8 fb−1 of data, adding new analyses (the missing transverse energy plus jets analysis) and updating old ones. Taking uncertainty correlations into account, and adding in quadrature the statistical and systematic uncertainties, the resulting preliminary Tevatron average mass of the top quark is M{sub t} = 173.2 ± 0.9 GeV/c2.
Download or read book Objet d art et d ameublement porcelaines fa ences written by and published by . This book was released on 1913 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combination of CDF and DO Results on the Mass of the Top Quark Using Up to 8 7 Fb 1 at the Tevatron written by and published by . This book was released on 2013 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combining the Top Quark Mass Results for Run 1 from CDF and D Zero written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CDF and D0 have published or submitted for publication eleven papers [1-11] that include direct experimental measurements of the top quark mass. Each experiment has found that the lepton+jets channel [1,5,6,9,10,11,12] gives the most precise result. However, CDF and D0 have also measured the top quark mass in other decay topologies. Both D0 [2,6] and CDF [3,4] have published additional results in the dilepton channels, while CDF [8] has published a result in the all-hadronic channel. Our aim in this note is to reduce the overall uncertainty on the top quark mass measurement by combining the most recent and final of these measurements [1,2,3,7,8]. This note combines the mass from the five separate measurements taking into account the statistical and systematic uncertainties as well as the correlations in the systematic uncertainties. The final Tevatron top mass based on Run 1 data is m{sub t} = 174.3 " 3.2(stat) " 4.0(syst) GeV/c2. Combining the statistical and systematic uncertainties, the top mass is m{sub t} = 174.3 " 5.1 GeV/c2.
Download or read book Top Mass and Cross Section Results from CDF and D0 at the Fermilab Tevatron written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the top quark mass and the t[bar t] production cross section, obtained by CDF and D0 Collaborations at the Tevatron, are presented. The methodology of analyses and their underlying assumptions are summarized. The CDF and D0 top mass averages, based on [approx]100 pb[sup -1] of data collected by each experiment in Run-I, and obtained from a set of selected measurements in several channels are M[sub t] = 176:0 [plus-minus] 4:0(stat) [plus-minus] 5:1(syst) GeV/c[sup 2] and M[sub t] = 172:1 [plus-minus] 5:2(stat) [plus-minus] 4:9(syst) GeV/c[sup 2], respectively. The combined Tevatron top quark mass is M[sub t] = 174:3 [plus-minus]3:2(stat) [plus-minus]4:0(syst) GeV/c]sup 2], where the correlations between CDF and D0 averages were taken into account. The CDF measurement of the t[bar t] cross section (assuming M[sub t] = 175 GeV/c[sup 2]) is [sigma][sub tt] = 7.6[sup 1.8][sub 1.5] pb, and the D0 value (assuming M[sub t] = 172.1 GeV/c[sup 2]) is [sigma][sub tt] = 5:9 [plus-minus] 1:7 pb. In anticipation of the much increased statistics in Run-II, the fact that top quark physics is one of the best windows to new physics beyond the Standard Model is emphasized.
Download or read book Top Quark Mass written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary of the most up-to-date top quark mass measurements at CDF is presented. These analyses use top-antitop candidate events detected in the CDF experiment at the Tevatron collider with an integrated luminosity of up to (almost equal to)3/fb. The combination of all those measurements together with the corresponding top mass measurements from the concurrently running D0 experiment at the Tevatron yields a world average of M{sub t} = [173.1 ± 0.6(stat.) ± 1.1(syst.)] GeV/c2.
Download or read book Recent Results in the Top Quark Sector from the D0 Experiment written by and published by . This book was released on 2015 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: In these proceedings, I review recent measurements in the top quark sector in pp-bar collisions at a centre-of-mass energy of √s = 1.96 TeV in Run II of the Fermilab Tevatron Collider using the D0 detector. I will present the differential measurement of the tt-bar production cross section and the Tevatron combination of inclusive tt-bar cross section measurements; the first evidence of the production of single top quarks in the s-channel by D0 and the observation in combination with CDF. Furthermore, I will review the measurements of the forward-backward asymmetry in tt-bar events, and conclude with the world's most precise single measurement of the top quark mass, which is a fundamental parameter of the standard model, and present the Tevatron combination, which is the world's most precise determination of the top quark mass, with a relative precision of 0.37%.
Download or read book Measurements of the Top Quark Mass with the D0 Detector written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mass of the top quark is a fundamental parameter of the standard model (SM) and has to be determined experimentally. In this talk, I present the most recent measurements of the top quark mass in $p\bar p$ collisions at $\sqrt s=1.96$~TeV recorded by the D0 experiment at the Fermilab Tevatron Collider. The measurements are performed in final states containing two leptons, using 5.4~\fb of integrated luminosity, and one lepton, using 9.7~\fb of integrated luminosity. The latter constitutes the most precise single measurement of the mass of the top quark, corresponding to a relative precision of 0.43\%. I conclude with a combination of our results with the results by the CDF collaboration, attaining a relative precision of 0.37\%.
Download or read book Lucas Family Group Sheets written by and published by . This book was released on 1996* with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Top Quark Pair Production written by Anna Christine Henrichs and published by Springer Science & Business Media. This book was released on 2013-10-04 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Before any kind of new physics discovery could be made at the LHC, a precise understanding and measurement of the Standard Model of particle physics' processes was necessary. The book provides an introduction to top quark production in the context of the Standard Model and presents two such precise measurements of the production of top quark pairs in proton-proton collisions at a center-of-mass energy of 7 TeV that were observed with the ATLAS Experiment at the LHC. The presented measurements focus on events with one charged lepton, missing transverse energy and jets. Using novel and advanced analysis techniques as well as a good understanding of the detector, they constitute the most precise measurements of the quantity at that time.
Download or read book Combination of CDF and D0 Results on W Boson Mass and Width written by and published by . This book was released on 2003 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Updated Combination of CDF and D0 Results for the Mass of the W Boson written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Methods for Data Analysis in Particle Physics written by Luca Lista and published by Springer. This book was released on 2017-10-13 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise set of course-based notes provides the reader with the main concepts and tools needed to perform statistical analyses of experimental data, in particular in the field of high-energy physics (HEP). First, the book provides an introduction to probability theory and basic statistics, mainly intended as a refresher from readers’ advanced undergraduate studies, but also to help them clearly distinguish between the Frequentist and Bayesian approaches and interpretations in subsequent applications. More advanced concepts and applications are gradually introduced, culminating in the chapter on both discoveries and upper limits, as many applications in HEP concern hypothesis testing, where the main goal is often to provide better and better limits so as to eventually be able to distinguish between competing hypotheses, or to rule out some of them altogether. Many worked-out examples will help newcomers to the field and graduate students alike understand the pitfalls involved in applying theoretical concepts to actual data. This new second edition significantly expands on the original material, with more background content (e.g. the Markov Chain Monte Carlo method, best linear unbiased estimator), applications (unfolding and regularization procedures, control regions and simultaneous fits, machine learning concepts) and examples (e.g. look-elsewhere effect calculation).
