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Measurements of the production cross-section for a $Z$ boson in association with $b$-jets in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

The ATLAS collaboration
JHEP 07 (2020) 044, 2020.

Abstract (data abstract)
This paper presents the first measurement of the production cross-section of a $Z$ boson in association with $b$-jets, in proton-proton collisions at $\sqrt{s}$​ = 13 TeV. The measurement has been completed at the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 35.6 fb$^{−1}$. Inclusive and differential cross-sections are measured for events containing a $Z$ boson decaying into electrons or muons and produced in association with at least one or at least two b-jets with transverse momentum $p_{\text{T}}​>$ 20 GeV and rapidity $|y| < $2.5. Fiducial region definition commont to all measured cross-sections: - 2 electrons or 2 muons of opposite charge, $p_{\text{T}}>$27 GeV, $|\eta|<2.5$, $76<M_{\ell\ell}<106$ GeV - At least one jet, reconstructed using anti-kT of R=0.4, of $p_{\text{T}}>20$ GeV, |y|<2.5, $\Delta$ $R(jet, lepton)>0.4$ - b-jets defined as jets containing at least one b-hadron of $p_{\text{T}}>5$ GeV within $\Delta$ $R(jet, b-hadron)>0.3$

  • Table 1

    Figure 7 of the article

    10.17182/hepdata.94219.v1/t1

    Measured fiducial cross sections for events with $Z(\rightarrow ll)\ge+1$ b-jets or with $Z(\rightarrow ll)\ge+2$ b-jets. The statistical uncertainties and the...

  • Table 2

    Figure 8 (left) of the article

    10.17182/hepdata.94219.v1/t2

    Differential fiducial cross section of the Z boson $p_{\text{T}}$ in events with $Z(\rightarrow ll)\ge+1$ b-jets. The statistical uncertainties and the...

  • Table 3

    Figure 8 (right) of the article

    10.17182/hepdata.94219.v1/t3

    Differential fiducial cross section of the leading b-jet $p_{\text{T}}$ in events with $Z(\rightarrow ll)\ge+1$ b-jets. The statistical uncertainties and the...

  • Table 4

    Figure 9 (left) of the article

    10.17182/hepdata.94219.v1/t4

    Differential fiducial cross section of the Z boson $|y|$ in events with $Z(\rightarrow ll)\ge+1$ b-jets. The statistical uncertainties and the...

  • Table 5

    Figure 9 (right) of the article

    10.17182/hepdata.94219.v1/t5

    Differential fiducial cross section of the leading b-jet $|y|$ in events with $Z(\rightarrow ll)\ge+1$ b-jets. The statistical uncertainties and the...

  • Table 6

    Figure 10 (left) of the article

    10.17182/hepdata.94219.v1/t6

    Differential fiducial cross section of the $\Delta \phi$ between Z boson and leading $b$-jet in events with $Z(\rightarrow ll)\ge+1$ b-jets....

  • Table 7

    Figure 10 (right) of the article

    10.17182/hepdata.94219.v1/t7

    Differential fiducial cross section of the $\Delta y$ between Z boson and leading $b$-jet in events with $Z(\rightarrow ll)\ge+1$ b-jets....

  • Table 8

    Figure 11 of the article

    10.17182/hepdata.94219.v1/t8

    Differential fiducial cross section of the $\Delta R$ between Z boson and leading $b$-jet in events with $Z(\rightarrow ll)\ge+1$ b-jets....

  • Table 9

    Figure 12 (left) of the article

    10.17182/hepdata.94219.v1/t9

    Differential fiducial cross section of the $\Delta \phi$ between the first two leading $b$-jets in events with $Z(\rightarrow ll)\ge+2$ b-jets....

  • Table 10

    Figure 12 (right) of the article

    10.17182/hepdata.94219.v1/t10

    Differential fiducial cross section of the $\Delta y$ between the first two leading $b$-jets in events with $Z(\rightarrow ll)\ge+2$ b-jets....

  • Table 11

    Figure 13 (left) of the article

    10.17182/hepdata.94219.v1/t11

    Differential fiducial cross section of the $\Delta R$ between the first two leading $b$-jets in events with $Z(\rightarrow ll)\ge+2$ b-jets....

  • Table 12

    Figure 13 (right) of the article

    10.17182/hepdata.94219.v1/t12

    Differential fiducial cross section of the invariant mass of the first two leading $b$-jets in events with $Z(\rightarrow ll)\ge+2$ b-jets....

  • Table 13

    Figure 14 (left) of the article

    10.17182/hepdata.94219.v1/t13

    Differential fiducial cross section of the Z boson $p_{\text{T}}$ in events with $Z(\rightarrow ll)\ge+2$ b-jets. The statistical uncertainties and the...

  • Table 14

    Figure 14 (right) of the article

    10.17182/hepdata.94219.v1/t14

    Differential fiducial cross section of the $p_{\text{T}}$ of the first two leading $b$-jets in events with $Z(\rightarrow ll)\ge+2$ b-jets. The...

  • Table 15

    Figure 15 of the article

    10.17182/hepdata.94219.v1/t15

    Differential fiducial cross section of the ratio between the $p_{\text{T}}$ and the invariant mass of the first two leading $b$-jets...

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