Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector

The ATLAS collaboration
No Journal Information, 2019

Abstract (data abstract)
CERN-LHC. A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$=13 TeV delivered by the Large Hadron Collider. The differential cross section is measured for events containing two same-flavour opposite-sign lepton pairs, and is corrected for detector effects. It exhibits a rich structure, with different mass regions dominated in the Standard Model by single Z production, Higgs production, and Z boson pair production, and non-negligible interference effects at high invariant masses. In addition, there may be contributions from beyond-the-Standard Model (BSM) physics. The measurement is compared to state-of-the-art Standard Model calculations, which are found to be consistent with the data. These calculations are used to interpret the data in terms of $gg\to ZZ \to 4\ell$ and $Z \rightarrow 4\ell$ subprocesses, and to place constraints on a possible BSM contribution.

  • Table 1

    Data from F10

    10.17182/hepdata.84818.v1/t1

    Measured and expected differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$

  • Table 2

    Data from F11

    10.17182/hepdata.84818.v1/t2

    Measured and expected differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 0$< p_{T}^{4l} <$20...

  • Table 3

    Data from F11

    10.17182/hepdata.84818.v1/t3

    Measured and expected differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 20$< p_{T}^{4l} <$50...

  • Table 4

    Data from F11

    10.17182/hepdata.84818.v1/t4

    Measured and expected differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 50$< p_{T}^{4l} <$100...

  • Table 5

    Data from F11

    10.17182/hepdata.84818.v1/t5

    Measured and expected differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 100$< p_{T}^{4l} <$600...

  • Table 6

    Data from F12

    10.17182/hepdata.84818.v1/t6

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 0.0$< y_{4l}...

  • Table 7

    Data from F12

    10.17182/hepdata.84818.v1/t7

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 0.4$< y_{4l}...

  • Table 8

    Data from F12

    10.17182/hepdata.84818.v1/t8

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 0.8$< y_{4l}...

  • Table 9

    Data from F12

    10.17182/hepdata.84818.v1/t9

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ in bin of 1.2$< y_{4l}...

  • Table 10

    Data from F13

    10.17182/hepdata.84818.v1/t10

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ for MELA$<$1.4 bin

  • Table 11

    Data from F13

    10.17182/hepdata.84818.v1/t11

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ for MELA$>$1.4 bin

  • Table 12

    Data from F14

    10.17182/hepdata.84818.v1/t12

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ for $\mu\mu\mu\mu$ events

  • Table 13

    Data from F14

    10.17182/hepdata.84818.v1/t13

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ for $eeee$ events

  • Table 14

    Data from F14

    10.17182/hepdata.84818.v1/t14

    Measured and expected double differential cross-section $\text{d}\sigma / \text{d} m_{4l}$ as a function of $m_{4l}$ for $ee\mu\mu$ events

  • Table 15

    Data from AUX

    10.17182/hepdata.84818.v1/t15

    Systematic covariance matrix for the differential $m_{4l}$ distribution.

  • Table 16

    Data from AUX

    10.17182/hepdata.84818.v1/t16

    Statistical covariance matrix for the differential $m_{4l}$ distribution.

  • Table 17

    Data from AUX

    10.17182/hepdata.84818.v1/t17

    Background covariance matrix for the differential $m_{4l}$ distribution.

  • Table 18

    Data from AUX

    10.17182/hepdata.84818.v1/t18

    Systematic covariance matrix for the differential $m_{4l}$-$p_{T}^{4l}$ distribution.<br><br> Bins labelled 1-9 correspond to the 0$< p_{T}^{4l} < $20 GeV bin...

  • Table 19

    Data from AUX

    10.17182/hepdata.84818.v1/t19

    Statistical covariance matrix for the differential $m_{4l}$-$p_{T}^{4l}$ distribution. <br><br> Bins labelled 1-9 correspond to the 0$< p_{T}^{4l} < $20 GeV...

  • Table 20

    Data from AUX

    10.17182/hepdata.84818.v1/t20

    Background covariance matrix for the differential $m_{4l}$-$p_{T}^{4l}$ distribution. <br><br> Bins labelled 1-9 correspond to the 0$< p_{T}^{4l} < $20 GeV...

  • Table 21

    Data from AUX

    10.17182/hepdata.84818.v1/t21

    Systematic covariance matrix for the differential $m_{4l}$-$y_{4l}$ distribution. <br><br> Bins labelled 1-9 correspond to the 0.0$< y_{4l} < $0.4 bin...

  • Table 22

    Data from AUX

    10.17182/hepdata.84818.v1/t22

    Statistical covariance matrix for the differential $m_{4l}$-$y_{4l}$ distribution. <br><br> Bins labelled 1-9 correspond to the 0.0$< y_{4l} < $0.4 bin...

  • Table 23

    Data from AUX

    10.17182/hepdata.84818.v1/t23

    Background covariance matrix for the differential $m_{4l}$-$y_{4l}$ distribution. <br><br> Bins labelled 1-9 correspond to the 0.0$< y_{4l} < $0.4 bin...

  • Table 24

    Data from AUX

    10.17182/hepdata.84818.v1/t24

    Systematic covariance matrix for the differential $m_{4l}$-MELA distribution. <br><br> Bins labelled 1-7 correspond to the MELA$<$ 0.4 bin with $m_{4l}$...

  • Table 25

    Data from AUX

    10.17182/hepdata.84818.v1/t25

    Statistical covariance matrix for the differential $m_{4l}$-MELA distribution. <br><br> Bins labelled 1-7 correspond to the MELA$<$ 0.4 bin with $m_{4l}$...

  • Table 26

    Data from AUX

    10.17182/hepdata.84818.v1/t26

    Background covariance matrix for the differential $m_{4l}$-MELA distribution. <br><br> Bins labelled 1-7 correspond to the MELA$<$ 0.4 bin with $m_{4l}$...

  • Table 27

    Data from AUX

    10.17182/hepdata.84818.v1/t27

    Systematic covariance matrix for the differential $m_{4l}$-lepton flavour distribution. <br><br> Bins labelled 1-9 correspond to $\mu\mu\mu\mu$ events with $m_{4l}$ values...

  • Table 28

    Data from AUX

    10.17182/hepdata.84818.v1/t28

    Statistical covariance matrix for the differential $m_{4l}$-lepton flavour distribution. <br><br> Bins labelled 1-9 correspond to $\mu\mu\mu\mu$ events with $m_{4l}$ values...

  • Table 29

    Data from AUX

    10.17182/hepdata.84818.v1/t29

    Background covariance matrix for the differential $m_{4l}$-lepton flavour distribution. <br><br> Bins labelled 1-9 correspond to $\mu\mu\mu\mu$ events with $m_{4l}$ values...

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