Measurement of the W-boson Mass with the ATLAS Detector at LHC
Author: Bjørn Peter Sørensen
Publisher:
Published: 2012
Total Pages: 80
ISBN-13:
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Author: Bjørn Peter Sørensen
Publisher:
Published: 2012
Total Pages: 80
ISBN-13:
DOWNLOAD EBOOKAuthor: Oleh Kivernyk
Publisher:
Published: 2016
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKThis thesis describes a measurement of the W boson mass with the ATLAS detector based on the data-set recorded by ATLAS in 2011 at a centre-of-mass energy of 7 TeV, and corresponding to 4.6 inverse femtobarn of integrated luminosity. Measurements are performed through template fits to the transverse momentum distributions of charged leptons and to transverse mass distributions of the W boson, in electron and muon decay modes in various kinematic categories. The individual measurements are found to be consistent and their combination leads to a value of m_W = 80371.1 ± 18.6 MeV. The measured value of the W boson mass is compatible with the current world average of m_W = 80385 ± 15 MeV. The uncertainty is competitive with the current most precise measurements performed by the CDF and D0 collaborations.
Author: Lennart Adam
Publisher:
Published: 2021
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: Lennart Adam
Publisher:
Published: 2021
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: Markus Zinser
Publisher: Springer
Published: 2018-09-25
Total Pages: 386
ISBN-13: 3030006506
DOWNLOAD EBOOKThis book presents two analyses, the first of which involves the search for a new heavy charged gauge boson, a so-called W' boson. This new gauge boson is predicted by some theories extending the Standard Model gauge group to solve some of its conceptual problems. Decays of the W' boson in final states with a lepton (l± = e± , μ±) and the corresponding (anti-)neutrino are considered. Data collected by the ATLAS experiment in 2015 at a center of mass energy of √s =13 TeV is used for the analysis. In turn, the second analysis presents a measurement of the double-differential cross section of the process pp->Z/gamma^* + X -> l^+l^- + X, including a gamma gamma induced contribution, at a center of mass energy of sqrt{s} = 8 TeV. The measurement is performed in an invariant mass region of 116 GeV to 1500 GeV as a function of invariant mass and absolute rapidity of the l^+l^-- pair, and as a function of invariant mass and pseudorapidity separation of the l^+l^-- pair. The data analyzed was recorded by the ATLAS experiment in 2012 and corresponds to an integrated luminosity of 20.3/fb. It is expected that the measured cross sections are sensitive to the PDFs at very high values of the Bjorken-x scaling variable, and to the photon structure of the proton.
Author: Mohammad Jawad Kareem
Publisher:
Published: 2017
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKPrecise measurements of the properties of the top quark allow for testing the Standard Model (SM) and can be used to constrain new physics models. The top quark is predicted in the SM to decay almost exclusively to a W boson and b-quark. Thus, studying the Wtb vertex structure at high precision and in detail is motivated. This thesis presents a measurement of the W boson helicity fractions in top quark decays with top/anit-top events in the lepton + jets final state using proton-proton collisions at a centre-of-mass energy of 8 TeV recorded in 2012 with the ATLAS detector at the LHC. The da...
Author: Herwig Schopper
Publisher: Springer Nature
Published: 2020
Total Pages: 632
ISBN-13: 3030382079
DOWNLOAD EBOOKThis first open access volume of the handbook series contains articles on the standard model of particle physics, both from the theoretical and experimental perspective. It also covers related topics, such as heavy-ion physics, neutrino physics and searches for new physics beyond the standard model. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author: Jakub Cúth
Publisher:
Published: 2018
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: Christian W. Fabjan
Publisher: Springer Nature
Published: 2020
Total Pages: 1083
ISBN-13: 3030353184
DOWNLOAD EBOOKThis second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author: Christoph Zimmermann
Publisher:
Published: 2016
Total Pages:
ISBN-13:
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