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Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$

Ratios of cross sections, $\sigma$(Z + c jets)/$\sigma$(Z + jets), $\sigma$(Z + b jets)/$\sigma$(Z + jets), and $\sigma$(Z + c jets)/$\sigma$(Z + b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in pp collisions at $\sqrt{s}=13~\mathrm{TeV}$...

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Autor principal: CMS Collaboration
Publicado: 2019
Materias:
Acceso en línea:http://cds.cern.ch/record/2684607
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description Ratios of cross sections, $\sigma$(Z + c jets)/$\sigma$(Z + jets), $\sigma$(Z + b jets)/$\sigma$(Z + jets), and $\sigma$(Z + c jets)/$\sigma$(Z + b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in pp collisions at $\sqrt{s}=13~\mathrm{TeV}$ using $35.9~\mathrm{fb}^{-1}$ of data collected by the CMS experiment at the CERN LHC. The fiducial volume of the measurement is defined by jet transverse momentum $p_{\mathrm{T}} > 30~\mathrm{GeV}$ and pseudorapidity $\left|{\eta}\right| < 2.4$. The Z bosons are selected within the mass range of 71 and $111~\mathrm{GeV}$ requiring leptons (electrons or muons) with $p_{\mathrm{T}} > 25~\mathrm{GeV}$ and $\left|{\eta}\right| <$ 2.4. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are compared with predictions from leading and next-to-leading order perturbative QCD calculations. These are the first of a kind measurements at $13~\mathrm{TeV}$, and the measurement precision exceeds that of the current theoretical predictions.
id cern-2684607
institution Organización Europea para la Investigación Nuclear
publishDate 2019
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spelling cern-26846072020-01-19T20:57:32Zhttp://cds.cern.ch/record/2684607CMS CollaborationMeasurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$Particle Physics - ExperimentRatios of cross sections, $\sigma$(Z + c jets)/$\sigma$(Z + jets), $\sigma$(Z + b jets)/$\sigma$(Z + jets), and $\sigma$(Z + c jets)/$\sigma$(Z + b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in pp collisions at $\sqrt{s}=13~\mathrm{TeV}$ using $35.9~\mathrm{fb}^{-1}$ of data collected by the CMS experiment at the CERN LHC. The fiducial volume of the measurement is defined by jet transverse momentum $p_{\mathrm{T}} > 30~\mathrm{GeV}$ and pseudorapidity $\left|{\eta}\right| < 2.4$. The Z bosons are selected within the mass range of 71 and $111~\mathrm{GeV}$ requiring leptons (electrons or muons) with $p_{\mathrm{T}} > 25~\mathrm{GeV}$ and $\left|{\eta}\right| <$ 2.4. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are compared with predictions from leading and next-to-leading order perturbative QCD calculations. These are the first of a kind measurements at $13~\mathrm{TeV}$, and the measurement precision exceeds that of the current theoretical predictions.CMS-PAS-SMP-19-004oai:cds.cern.ch:26846072019
spellingShingle Particle Physics - Experiment
CMS Collaboration
Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$
title Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$
title_full Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$
title_fullStr Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$
title_full_unstemmed Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$
title_short Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$
title_sort measurement of the associated production of a z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=13~\mathrm{tev}$
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2684607
work_keys_str_mv AT cmscollaboration measurementoftheassociatedproductionofazbosonwithcharmorbottomquarkjetsinprotonprotoncollisionsatsqrts13mathrmtev