cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.85867.v1/t13
title: "Veto efficiency, Soft $H_T$" of "Electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}= $ 13 TeV"

description: Efficiency of a gap activity veto in dielectron and dimuon events with BDT &gt; 0.92, as a function of total soft $H_T$ for data, MC expectations with only DY events, including signal with the PYTHIA PS model, or the HERWIG++ PS model.
description: CERN-LHC. A measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}$=13TeV. The cross section is measured in a kinematic region defined by invariant masses $m_{ll}~&gt;~50$ GeV, $m_{jj}~&gt;~120$ GeV, and transverse momenta $p_{Tj}~&gt;~25$ GeV, where $l$ denotes electrons and muons, and $j$ - quarks produced in the hard interaction. The measurement is based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9 $fb^{-1}$. Limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory and an effective Lagrangian.
DOI: 10.17182/hepdata.85867.v1/t14
title: "Veto efficiency, leading soft jet $p_T$" of "Electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}= $ 13 TeV"

description: Efficiency of a gap activity veto in dielectron and dimuon events with BDT &gt; 0.92, as a function of the leading soft track-jet $p_T$ for data, MC expectations with only DY events, including signal with the PYTHIA PS model, or the HERWIG++ PS model.
description: CERN-LHC. A measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}$=13TeV. The cross section is measured in a kinematic region defined by invariant masses $m_{ll}~&gt;~50$ GeV, $m_{jj}~&gt;~120$ GeV, and transverse momenta $p_{Tj}~&gt;~25$ GeV, where $l$ denotes electrons and muons, and $j$ - quarks produced in the hard interaction. The measurement is based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9 $fb^{-1}$. Limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory and an effective Lagrangian.
DOI: 10.17182/hepdata.85868.v1/t1
title: "Table 1" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Signal yields N(Z+c) and N(Z+b), efficiency*acceptance correction factors C(Z+c) and C(Z+b), cross section sigma(Z+c)B and cross section ratios sigma(Z+c)/sigma(Z+b) in the three categories (semileptonic, D+-, D*) and in the two Z boson decay channels (e+e-, mu+mu-). The factors that correct the acceptance and selection inefficiencies are also given. They include the relevant branching fraction for the corresponding channel. All uncertainties quoted in the table are statistical, except for those of the measured cross sections and cross section ratios where the first uncertainty is statistical and the second is the estimated systematic uncertainty
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t2
title: "Table 2" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Z+c and Z+b signal yields, differential cross section dsigma(Z+c)/dpTZ times branching ratio and differential cross sections ratio dsigma(Z+c)/dpTZ / dsigma(Z+b)/dpTZ for three ranges of the transverse momentum of the Z boson in the semileptonic mode
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t3
title: "Table 3" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Z+c and Z+b signal yields, differential cross section dsigma(Z+c)/dpTZ times branching ratio and differential cross sections ratio dsigma(Z+c)/dpTZ / dsigma(Z+b)/dpTZ for three ranges of the transverse momentum of the jet in the semileptonic mode
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t4
title: "Table 4 upper" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Differential cross section dsigma(Z+c)/dpTZ times branching ratio and differential cross sections ratio dsigma(Z+c)/dpTZ / dsigma(Z+b)/dpTZ for three ranges of the transverse momentum of the Z boson and combining the dielectron and dimuon Z0 decay channels
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t5
title: "Table 4 lower" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Differential cross section dsigma(Z+c)/dpTjet times branching ratio and differential cross sections ratio dsigma(Z+c)/dpTZ / dsigma(Z+b)/dpTjet for three ranges of the transverse momentum of the jet and combining the dielectron and dimuon Z0 decay channels
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t6
title: "Figure 1 a" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Transverse momentum distribution of the selected muon-inside-a-jet for events with an identified muon among the jet constituents in the dielectron channel
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t7
title: "Figure 1 b" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Transverse momentum distribution of the selected muon-inside-a-jet for events with an identified muon among the jet constituents in the dimuon channel
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t8
title: "Figure 2 a" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: The invariant mass distribution of three-prong secondary vertices for events selected in the D± mode, in the dielectron channel
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t10
title: "Figure 3 a" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: The invariant mass distribution of the three-track system composed of a two-prong secondary vertex and a primary particle for events selected in the D∗(2010)± mode, in the dielectron channel
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t11
title: "Figure 3 b" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: The invariant mass distribution of the three-track system composed of a two-prong secondary vertex and a primary particle for events selected in the D ∗ (2010) ± mode, in the dimuon channel
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t12
title: "Figure 4 a" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Transverse momentum distribution of the c-tagged jet normalized to unity, in simulated W+c and Z+c samples and in W+c data events.
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.
DOI: 10.17182/hepdata.85868.v1/t13
title: "Figure 4 b" of "Measurement of associated Z + charm production in proton-proton collisions at $\sqrt{s} = $ 8 TeV"

description: Number of reconstructed secondary vertices normalized to unity, in simulated W+c and Z+c samples and in W+c data events.
description: A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l &gt; 20$ GeV, $|\eta_l| &lt; 2.1$, $71 &lt; m_{\ell\ell} &lt; 111$ GeV, and heavy flavour jets with $p_T^{\text{jet}} &gt; 25$ GeV and $|\eta_\text{jet}| &lt; 2.5$. The Z+c production cross section is measured to $\sigma(pp \to Z + c + X) \mathcal{B}(Z \to \ell^+\ell^-) = 8.8 \pm 0.5$ (stat) $\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\sigma(pp \to Z + c + X)/\sigma(pp \to Z + b + X) = 2.0 \pm 0.2$ (stat) $\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.