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Measurement Of The Associated Production Of A Single Top Quark And A W Boson In Single Lepton Events With The Atlas Detector
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Book Synopsis Measurement of the Associated Production of a Single Top Quark and a W Boson in Single-lepton Events with the ATLAS Detector by : Sebastian Mergelmeyer
Download or read book Measurement of the Associated Production of a Single Top Quark and a W Boson in Single-lepton Events with the ATLAS Detector written by Sebastian Mergelmeyer and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Production Cross-section of a Single Top Quark in Association with a W Boson at 8 TeV with the ATLAS Experiment by :
Download or read book Measurement of the Production Cross-section of a Single Top Quark in Association with a W Boson at 8 TeV with the ATLAS Experiment written by and published by . This book was released on 2016 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cross-section for the production of a single top quark in association with a W boson in proton-proton collisions at √s = 8 is measured. The dataset corresponds to an integrated luminosity of 20.3 fb-1, collected by the ATLAS detector in 2012 at the Large Hadron Collider at CERN. Events containing two leptons and one central b-jet are selected. The Wt signal is separated from the backgrounds using boosted decision trees, each of which combines a number of discriminating variables into one classifier. Production of Wt events is observed with a significance of 7.7[sigma]. The cross-section is extracted in a profile likelihood fit to the classifier output distributions. The Wt cross-section, inclusive of decay modes, is measured to be 23.0±1.3(stat.)-3.5+3.2(syst.)±1.1(lumi.) pb. The measured cross-section is used to extract a value for the CKM matrix element.
Book Synopsis Measurements of the Top Quark Pair Production Cross Section and Branching Ratio to a W-boson and Bottom Quark Using the Semi-leptonic and Dilepton Final States with the ATLAS Detector at the LHC by : Robert E. Calkins
Download or read book Measurements of the Top Quark Pair Production Cross Section and Branching Ratio to a W-boson and Bottom Quark Using the Semi-leptonic and Dilepton Final States with the ATLAS Detector at the LHC written by Robert E. Calkins and published by . This book was released on 2012 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : In the Standard Model, the top quark plays a unique role as the heaviest known fundamental particle and as a quark that decays before it is able to hadronize. Top quarks are expected to decay to a W-boson and a b-quark nearly 100% of the time. If the branching ratio of t → Wb is lower than one, the distribution of the number of b-tagged jets will shift to lower multiplicities. A simultaneous likelihood fit to the number of b-tagged jets distributions in the lepton+jets and dilepton channels is performed on 4.7 fb−1 of data collected by the ATLAS detector to extract both the branching ratio and the tt ̄ cross section. The branching ratio of t → Wb, R, is measured to be 1.06±0.11, which is consistent with the Standard Model value. This is the first measurement of the t → Wb branching ratio performed with the ATLAS detector using both the lepton+jets and dilepton channels at the LHC. The tt ̄ cross section is measured to be [special characters omitted] pb, which agrees with NNLO predictions.
Book Synopsis Search for New Phenomena in Top-Antitop Quarks Final States with Additional Heavy-Flavour Jets with the ATLAS Detector by : Daiki Yamaguchi
Download or read book Search for New Phenomena in Top-Antitop Quarks Final States with Additional Heavy-Flavour Jets with the ATLAS Detector written by Daiki Yamaguchi and published by Springer Nature. This book was released on 2019-10-30 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the search for a new heavy particle, the Vector-Like Top quark (VLT), in the Large Hadron Collider (LHC) at CERN. The signal process is the pair production of VLT decaying into a Higgs boson and top quark (TT→Ht+X, X=Ht, Wb, Zt). The signal events result in top–antitop quarks final states with additional heavy flavour jets. The book summarises the analysis of the data collected with the ATLAS detector in 2015 and 2016. In order to better differentiate between signals and backgrounds, exclusive taggers of top quark and Higgs boson were developed and optimised for VLT signals. These efforts improved the sensitivity by roughly 30%, compared to the previous analysis. The analysis outcomes yield the strongest constraints on parameter space in various BSM theoretical models. In addition, the book addresses detector operation and the evaluation of tracking performance. These efforts are essential to properly collecting dense events and improving the accuracy of the reconstructed objects that are used for particle identification. As such, they represent a valuable contribution to data analysis in extremely dense environments.
Book Synopsis Top Quark Pair Production by : Anna Christine Henrichs
Download or read book Top Quark Pair Production written by Anna Christine Henrichs and published by Springer. This book was released on 2016-08-23 with total page 0 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.
Book Synopsis Measurements of the Associated Production of a Top Quark Pair and a Z Boson with the ATLAS Detector by : Laurynas Mince
Download or read book Measurements of the Associated Production of a Top Quark Pair and a Z Boson with the ATLAS Detector written by Laurynas Mince and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the T-channel Single Top Quark Production Cross Section with the ATLAS Detector at S by : Philipp Sturm
Download or read book Measurement of the T-channel Single Top Quark Production Cross Section with the ATLAS Detector at S written by Philipp Sturm and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Top Quark Pair Production Measurements in the Single Lepton Channel Using the ATLAS Detector by : Rafał Bielski
Download or read book Top Quark Pair Production Measurements in the Single Lepton Channel Using the ATLAS Detector written by Rafał Bielski and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Observation of Single Top Quark with Associated Z Boson Production at the Large Hadron Collider Using the ATLAS Detector by : Dylan Frizzell
Download or read book Observation of Single Top Quark with Associated Z Boson Production at the Large Hadron Collider Using the ATLAS Detector written by Dylan Frizzell and published by . This book was released on 2019 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Associated Production of a W Boson and a Top Quark with the ATLAS Detector at 7 TeV by : Jan André Stillings
Download or read book Search for the Associated Production of a W Boson and a Top Quark with the ATLAS Detector at 7 TeV written by Jan André Stillings and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for the Single Production of Vector-like Quarks Decaying to a W-boson and a B-quark in the Leptonic Final State with the ATLAS Detector by : Ferdinand Schenck
Download or read book A Search for the Single Production of Vector-like Quarks Decaying to a W-boson and a B-quark in the Leptonic Final State with the ATLAS Detector written by Ferdinand Schenck and published by . This book was released on 2023* with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evidence for the Associated Production of a W Boson and a Top Quark at ATLAS by : James Koll
Download or read book Evidence for the Associated Production of a W Boson and a Top Quark at ATLAS written by James Koll and published by . This book was released on 2013 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Bottom Quark Pair Production, in Association with Z Bosons and Top Quarks, with the ATLAS Detector by : Stewart Swift (Ph. D. in physics)
Download or read book Measurement of Bottom Quark Pair Production, in Association with Z Bosons and Top Quarks, with the ATLAS Detector written by Stewart Swift (Ph. D. in physics) and published by . This book was released on 2019 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Measurement of the Mass of the Top Quark in Lepton + Jets Events at CDF by : Erik Matthews Brubaker
Download or read book A Measurement of the Mass of the Top Quark in Lepton + Jets Events at CDF written by Erik Matthews Brubaker and published by . This book was released on 2004 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Production Cross Section of a W Boson with a Single Charm Quark Using the ATLAS Detector at the Large Hadron Collider by : Giacomo Snidero
Download or read book Measurement of the Production Cross Section of a W Boson with a Single Charm Quark Using the ATLAS Detector at the Large Hadron Collider written by Giacomo Snidero and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Associated Production of a Vector Boson (W, Z) and Top Quark Pair in the Opposite Sign Dilepton Channel with Pp Collisions at $\sqrts} by : Tamara Vázquez Schröder
Download or read book Measurement of the Associated Production of a Vector Boson (W, Z) and Top Quark Pair in the Opposite Sign Dilepton Channel with Pp Collisions at $\sqrts} written by Tamara Vázquez Schröder and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W-boson Polarisation in Top-quark Decays with the ATLAS Detector by : Andrea Helen Knue
Download or read book Measurement of the W-boson Polarisation in Top-quark Decays with the ATLAS Detector written by Andrea Helen Knue and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the W-boson polarisation in top-quark decays is presented. The top-antitop events were produced in proton-proton collisions at a centre-of-mass energy of sqrt{s} = 7 TeV at the LHC. The data set corresponds to an integrated luminosity of 4.7 fb-1 and was collected by the ATLAS experiment. The measurement was performed in the lepton+jets channel which is characterised by an isolated electron or muon, missing transverse energy and at least four jets. One of the jets has to be identified as a b-jet. The W-boson polarisation was studied using the angular distribution of the cha ...
