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A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV
This paper presents for the first time a precise measurement of the production properties of the $Z$-boson in the full phase space of the decay leptons. The measurement is based on proton-proton collision data collected by the ATLAS experiment in 2012 at $\sqrt{s} = 8$ TeV at the LHC and correspondi...
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Lenguaje: | eng |
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2023
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Acceso en línea: | http://cds.cern.ch/record/2854867 |
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author | The ATLAS collaboration |
author_facet | The ATLAS collaboration |
author_sort | The ATLAS collaboration |
collection | CERN |
description | This paper presents for the first time a precise measurement of the production properties of the $Z$-boson in the full phase space of the decay leptons. The measurement is based on proton-proton collision data collected by the ATLAS experiment in 2012 at $\sqrt{s} = 8$ TeV at the LHC and corresponding to an integrated luminosity of 20.2 $^{-1}$. This measurement, based on a total of 15.3 million $Z$-boson decays to electron and muon pairs, extends and improves a previous measurement of the full set of angular coefficients describing $Z$-boson decay. The double-differential cross-section distributions in $Z$-boson transverse momentum and rapidity are measured in the pole region, defined as $80 < m_Z < 100$ GeV, over the rapidity range $|y| < 3.6$. The total uncertainty of the normalised cross-section measurements in the bulk of the $p_T$ distribution is dominated by statistical uncertainties over the full range and increases as a function of rapidity from $0.5-1.0\%$ for $|y| < 2.0$ to $2-7\%$ at higher rapidities. The results for the transverse momentum rapidity-dependent distributions are compared to state-of-the-art QCD predictions, which combine in the best cases approximate N4LL resummation with N3LO fixed-order perturbative calculations. The differential rapidity distributions integrated over $p_T$ are even more precise, with accuracies from $0.2-0.3\%$ for $|y| < 2.0$ to $0.4-0.9\%$ at higher rapidities, and are compared to fixed-order QCD predictions using the most recent parton distribution functions. |
id | cern-2854867 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2023 |
record_format | invenio |
spelling | cern-28548672023-09-18T12:17:28Zhttp://cds.cern.ch/record/2854867engThe ATLAS collaborationA precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeVParticle Physics - ExperimentThis paper presents for the first time a precise measurement of the production properties of the $Z$-boson in the full phase space of the decay leptons. The measurement is based on proton-proton collision data collected by the ATLAS experiment in 2012 at $\sqrt{s} = 8$ TeV at the LHC and corresponding to an integrated luminosity of 20.2 $^{-1}$. This measurement, based on a total of 15.3 million $Z$-boson decays to electron and muon pairs, extends and improves a previous measurement of the full set of angular coefficients describing $Z$-boson decay. The double-differential cross-section distributions in $Z$-boson transverse momentum and rapidity are measured in the pole region, defined as $80 < m_Z < 100$ GeV, over the rapidity range $|y| < 3.6$. The total uncertainty of the normalised cross-section measurements in the bulk of the $p_T$ distribution is dominated by statistical uncertainties over the full range and increases as a function of rapidity from $0.5-1.0\%$ for $|y| < 2.0$ to $2-7\%$ at higher rapidities. The results for the transverse momentum rapidity-dependent distributions are compared to state-of-the-art QCD predictions, which combine in the best cases approximate N4LL resummation with N3LO fixed-order perturbative calculations. The differential rapidity distributions integrated over $p_T$ are even more precise, with accuracies from $0.2-0.3\%$ for $|y| < 2.0$ to $0.4-0.9\%$ at higher rapidities, and are compared to fixed-order QCD predictions using the most recent parton distribution functions.ATLAS-CONF-2023-013oai:cds.cern.ch:28548672023-03-31 |
spellingShingle | Particle Physics - Experiment The ATLAS collaboration A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV |
title | A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV |
title_full | A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV |
title_fullStr | A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV |
title_full_unstemmed | A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV |
title_short | A precise measurement of the $Z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at sqrt s = 8 TeV |
title_sort | precise measurement of the $z$-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the atlas experiment at sqrt s = 8 tev |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2854867 |
work_keys_str_mv | AT theatlascollaboration aprecisemeasurementofthezbosondoubledifferentialtransversemomentumandrapiditydistributionsinthefullphasespaceofthedecayleptonswiththeatlasexperimentatsqrts8tev AT theatlascollaboration precisemeasurementofthezbosondoubledifferentialtransversemomentumandrapiditydistributionsinthefullphasespaceofthedecayleptonswiththeatlasexperimentatsqrts8tev |