Measurement Of The Boson Z Differential Cross Section In Transverse Momentum In The Electron Positron Channel With The Atlas Detector At Lhc
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Measurement Of The Boson Z Differential Cross Section In Transverse Momentum In The Electron Positron Channel With The Atlas Detector At Lhc
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Author : Homero Martinez
language : en
Publisher:
Release Date : 2013
Measurement Of The Boson Z Differential Cross Section In Transverse Momentum In The Electron Positron Channel With The Atlas Detector At Lhc written by Homero Martinez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards
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Author :
language : en
Publisher:
Release Date : 2002
Index To Theses With Abstracts Accepted For Higher Degrees By The Universities Of Great Britain And Ireland And The Council For National Academic Awards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Dissertations, Academic categories.
Measurement Of The Production Cross Section Of The Z Boson And Determination Of Its Spin With The Atlas Detector
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Author : Shalu Solomon
language : en
Publisher:
Release Date : 2019
Measurement Of The Production Cross Section Of The Z Boson And Determination Of Its Spin With The Atlas Detector written by Shalu Solomon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
"This thesis presents the results of two measurements of the Z boson, one of the mediators of the electroweak force in the Standard Model of particle physics. The first is the measurement of the total and the differential production cross-sections of the Z boson, and the second is the determination of the spin of the particle. The measurements are made with the 6.1 fb-1 proton-proton collision data collected by the ATLAS detector in 2016 at a center of mass energy of 13 TeV with the Large Hadron Collider. The leptonic decay of the Z boson into an electron-positron pair is the channel examined. The measurements are compared with the theoretical predictions at next-to-leading order for a quantitative and a precise understanding of the process. The observed results agree with the Standard Model expectations within uncertainties. The total cross-section of Z production in the di-electron channel is measured to be 1.878 ± 0.02 (stat)_(−0.052)^(+0.045) (syst) ± 0.042 (lumi) nb and the differential cross-sections as functions of the transverse momentum and the rapidity of the Z particle match with the predictions. The angular distribution of the electrons confirms the spin 1 nature of the Z boson, also in accordance with the Standard Model." --
Z Boson Cross Section Measurements And Neutral Higgs Boson Search In The Di Muon Channel With The Cms Detector
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Author : Xinmei Niu (Ph. D.)
language : en
Publisher:
Release Date : 2019
Z Boson Cross Section Measurements And Neutral Higgs Boson Search In The Di Muon Channel With The Cms Detector written by Xinmei Niu (Ph. D.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
In this thesis, measurements of inclusive and differential Z boson production cross sections in proton-proton collisions at [square root of] s =13 TeV with the CMS detector at Large Hadron Collider are performed with the di-muon channel. The measured total inclusive cross section times branching ratio is or(pp - ZX) x [beta](Z --> [mu][mu]) = 1870 ± 2(stat) ± 35(syst) ± 51(lumi) pb for the di-muon invariant mass in the range of 60 to 120 GeV, which is in good agreement with the next-to-next-to leading order QCD predictions. The spectra of Z boson transverse momentum, ... variable, rapidity, and the muon transverse momentum are also measured and compared with theoretical predictions. The large production cross section of Z boson and good experimental accessibility of final-state muons permit a real-time monitoring of luminosities using the counts of reconstructed Z --> [mu][mu] events. Preliminary results of counting of Z bosons as a luminometer are shown using the entire 2018 data-taking period. A search for beyond Standard Model neutral Higgs bosons decaying to two muons is also presented. No significant excess is observed. A 95% confidence level upper limit is set on ... The exclusion contour is also determined on the parameter phase space in the context of Minimal Supersymmetric Standard Mode representative benchmark scenarios.
A Measurement Of The Ratio Of The Production Cross Sections For W And Z Bosons In Association With Jets With The Atlas Detector
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Author :
language : en
Publisher:
Release Date : 2014
A Measurement Of The Ratio Of The Production Cross Sections For W And Z Bosons In Association With Jets With The Atlas Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
In this study, the ratio of the production cross sections for W and Z bosons in association with jets has been measured in proton-proton collisions at √s = 7TeV with the ATLAS experiment at the Large Hadron Collider. The measurement is based on the entire 2011 dataset, corresponding to an integrated luminosity of 4.6fb-1. Inclusive and differential cross-section ratios for massive vector bosons decaying to electrons and muons are measured in association with jets with transverse momentum pT > 30GeV and jet rapidity.
Measurement Of Fiducial Differential Cross Sections Of Gluon Fusion Production Of Higgs Bosons Decaying To Ww U2192 E With The Atlas Detector At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2016
Measurement Of Fiducial Differential Cross Sections Of Gluon Fusion Production Of Higgs Bosons Decaying To Ww U2192 E With The Atlas Detector At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Here, this paper describes a measurement of fiducial and differential cross sections of gluon-fusion Higgs boson production in the H → WW *→ e??? channel, using 20.3 fb–1 of proton-proton collision data. The data were produced at a centre-of-mass energy of √s = 8 TeV at the CERN Large Hadron Collider and recorded by the ATLAS detector in 2012. Cross sections are measured from the observed H→ W W*→ e??? signal yield in categories distinguished by the number of associated jets. The total cross section is measured in a fiducial region defined by the kinematic properties of the charged leptons and neutrinos. Differential cross sections are reported as a function of the number of jets, the Higgs boson transverse momentum, the dilepton rapidity, and the transverse momentum of the leading jet. The jet-veto efficiency, or fraction of events with no jets above a given transverse momentum threshold, is also reported. All measurements are compared to QCD predictions from Monte Carlo generators and fixed-order calculations, and are in agreement with the Standard Model predictions.
Measurement Of The Inclusive Electron Cross Section From Heavy Flavour Decays And Search For Compressed Supersymmetric Scenarios With The Atlas Experiment
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Author : Moritz Backes
language : en
Publisher: Springer
Release Date : 2014-06-11
Measurement Of The Inclusive Electron Cross Section From Heavy Flavour Decays And Search For Compressed Supersymmetric Scenarios With The Atlas Experiment written by Moritz Backes and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-11 with Science categories.
The first part of this thesis presents the measurement of the inclusive cross-section for electron production from heavy-flavour decays in the electron transverse momentum range 7 GeV
Measurement Of Fiducial Differential Cross Sections Of Gluon Fusion Production Of Higgs Bosons Decaying To Ww 2 E Nu Mu Nu With The Atlas Detector At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2016
Measurement Of Fiducial Differential Cross Sections Of Gluon Fusion Production Of Higgs Bosons Decaying To Ww 2 E Nu Mu Nu With The Atlas Detector At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Here, this paper describes a measurement of fiducial and differential cross sections of gluon-fusion Higgs boson production in the H → WW *→ e[nu][mu][nu] channel, using 20.3 fb-1 of proton-proton collision data. The data were produced at a centre-of-mass energy of √s = 8 TeV at the CERN Large Hadron Collider and recorded by the ATLAS detector in 2012. Cross sections are measured from the observed H→ W W*→ e[nu][mu][nu] signal yield in categories distinguished by the number of associated jets. The total cross section is measured in a fiducial region defined by the kinematic properties of the charged leptons and neutrinos. Differential cross sections are reported as a function of the number of jets, the Higgs boson transverse momentum, the dilepton rapidity, and the transverse momentum of the leading jet. The jet-veto efficiency, or fraction of events with no jets above a given transverse momentum threshold, is also reported. All measurements are compared to QCD predictions from Monte Carlo generators and fixed-order calculations, and are in agreement with the Standard Model predictions.
Measurement Of Differential Production Cross Sections For A Z Boson In Association With B Jets In 7 Tev Proton Proton Collisions With The Atlas Detector
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Author :
language : en
Publisher:
Release Date : 2014
Measurement Of Differential Production Cross Sections For A Z Boson In Association With B Jets In 7 Tev Proton Proton Collisions With The Atlas Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
We report measurements of differential production cross-sections of a Z boson in association with b-jets in pp collisions at √ s = 7 TeV. The data analysed correspond to an integrated luminosity of 4.6 fb-1 recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a Z boson decaying into an electron or muon pair, and containing b-jets. For events with at least one b-jet, the cross-section is presented as a function of the Z boson transverse momentum and rapidity, together with the inclusive b-jet cross-section as a function of b-jet transverse momentum, rapidity and angular separations between the b-jet and the Z boson. For events with at least two b-jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum b-jets, and as a function of the Z boson transverse momentum and rapidity. Lastly, results are compared to leading-order and next-to-leading-order perturbative QCD calculations.
Measurement Of The High Mass Drell Yan Differential Cross Section In The Electron Positron Channel With The Atlas Experiment At S
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Author : Katalin Nikolics
language : en
Publisher:
Release Date : 2013
Measurement Of The High Mass Drell Yan Differential Cross Section In The Electron Positron Channel With The Atlas Experiment At S written by Katalin Nikolics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.