Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS
Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS
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DissertationDate of Exam
22.04.2013Date of Publication
15.11.2013Advisor
Wermes, NorbertCo-Referee
Dingfelder, Jochen ChristianMetadata
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Abstract
The measurement of the effective weak mixing angle with the ATLAS experiment at the LHC is presented. It is extracted from the forward--backward asymmetry in the polar angle distribution of the muons originating from $Z$ boson decays in the reaction $pprightarrow Z/gamma^*+Xrightarrowmu^+mu^-+X$. In total $4.7,{rm fb}^{-1}$ of proton--proton collisions at $sqrt{s}=7,TeV$ are analysed. In addition, the full polar and azimuthal angular distributions are measured as a function of the transverse momentum of the $Z/gamma^*$ system and are compared to several simulations as well as recent results obtained in $pbar{p}$ collisions. Finally, the angular distributions are used to confirm the spin of the gluon using the Lam-Tung relation.
Subjects
Teilchenphysik, LHC, ATLAS, Standardmodell, Weinberg-Winkel, schwacher Mischungswinkel, Gluon Spin, Vorwärts-Rückwärts-Asymmetrie, Winkelverteilung, Z-Boson, particle physics, standard model, Weinberg angle, weak mixing angle, gluon spin, forward-backward-asymmetry, angular distribution
Classification (DDC)
530 PhysikSchmieden, Kristof: Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS. - Bonn, 2013. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5n-33051
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5n-33051
@phdthesis{handle:20.500.11811/5735,
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5n-33051,
author = {{Kristof Schmieden}},
title = {Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2013,
month = nov,
note = {The measurement of the effective weak mixing angle with the ATLAS experiment at the LHC is presented. It is extracted from the forward--backward asymmetry in the polar angle distribution of the muons originating from $Z$ boson decays in the reaction $pprightarrow Z/gamma^*+Xrightarrowmu^+mu^-+X$. In total $4.7,{rm fb}^{-1}$ of proton--proton collisions at $sqrt{s}=7,TeV$ are analysed. In addition, the full polar and azimuthal angular distributions are measured as a function of the transverse momentum of the $Z/gamma^*$ system and are compared to several simulations as well as recent results obtained in $pbar{p}$ collisions. Finally, the angular distributions are used to confirm the spin of the gluon using the Lam-Tung relation.},
url = {https://hdl.handle.net/20.500.11811/5735}
}
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5n-33051,
author = {{Kristof Schmieden}},
title = {Measurement of the Weak Mixing Angle and the Spin of the Gluon from Angular Distributions in the Reaction pp → Z/γ* + X → μ+μ- + X with ATLAS},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2013,
month = nov,
note = {The measurement of the effective weak mixing angle with the ATLAS experiment at the LHC is presented. It is extracted from the forward--backward asymmetry in the polar angle distribution of the muons originating from $Z$ boson decays in the reaction $pprightarrow Z/gamma^*+Xrightarrowmu^+mu^-+X$. In total $4.7,{rm fb}^{-1}$ of proton--proton collisions at $sqrt{s}=7,TeV$ are analysed. In addition, the full polar and azimuthal angular distributions are measured as a function of the transverse momentum of the $Z/gamma^*$ system and are compared to several simulations as well as recent results obtained in $pbar{p}$ collisions. Finally, the angular distributions are used to confirm the spin of the gluon using the Lam-Tung relation.},
url = {https://hdl.handle.net/20.500.11811/5735}
}
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