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Measurement of $WW/WZ \to \ell \nu q q^{\prime}$ production with the hadronically decaying boson reconstructed as one or two jets in $pp$ collisions at $\sqrt{s}=8$ TeV with ATLAS, and constraints on anomalous gauge couplings

The ATLAS collaboration
No Journal Information, 2017

Abstract (data abstract)
CERN-LHC. This paper presents a study of the production of WW or WZ boson pairs, with one W boson decaying to electron-neutrino or muon-neutrino and one W or Z boson decaying hadronically. The analysis uses 20.2 fb-1 of sqrt(s)=8 TeV pp collision data, collected by the ATLAS detector at the Large Hadron Collider. Cross-sections for WW/WZ production are measured in high-pT fiducial regions defined close to the experimental event selection. The cross-section is measured for the case where the hadronically decaying boson is reconstructed as two resolved jets (WV->lvjj), and the case where it is reconstructed as a single jet (WV->lvJ). For the description of the WV->lvjj and WV->lvJ fiducial phase spaces, refer to section 8.1 and 8.2 of the paper. The transverse momentum distribution of the hadronically decaying boson is used to search for new physics. Observations are consistent with the Standard Model predictions, and 95% confidence intervals are calculated for parameters describing anomalous triple gauge-boson couplings (aTGCs). The aTGC search is done applying the same selection used for cross section measurement, plus an additional requirement for the jet-jet invariant mass (single jet mass) to be close to the W mass: 65 GeV < m_jj < 95 GeV (65 GeV < m_J < 95 GeV).

  • Table 1

    Data from Section 10, figure 6.

    10.17182/hepdata.78399.v1/t1

    Measured fiducial cross section in the WV->lvjj and WV->lvJ channels. Refer to the paper for details of applied event selection.

  • Table 2

    10.17182/hepdata.78399.v1/t2

    Correction factors D for WV->lvjj and WV->lvJ channels. D = fWW * CWW + (1-fWW) * CWZ. fWW is the...

  • Table 3

    Data from Table 7

    10.17182/hepdata.78399.v1/t3

    The expected and observed 95% confidence intervals for the anomalous coupling parameters defined in the EFT frame work. WV->lvjj channel.

  • Table 4

    Data from Table 7

    10.17182/hepdata.78399.v1/t4

    The expected and observed 95% confidence intervals for the anomalous coupling parameters defined in the EFT frame work. WV->lvJ channel.

  • Table 5

    Data from Table 8 auxiliary material. Figure 7 (a)

    10.17182/hepdata.78399.v1/t5

    The expected number of events passing the final event selection in the WW/WZ->lvjj channel, in each pT(jj) bin of the...

  • Table 6

    Data from Table 8 auxiliary material. Figure 6 of auxiliary material.

    10.17182/hepdata.78399.v1/t6

    The expected number of events passing the final event selection in the WW/WZ->lvjj channel, in each pT(jj) bin of the...

  • Table 7

    Data from Table 9 auxiliary material. Figure 7 (b)

    10.17182/hepdata.78399.v1/t7

    The expected number of events passing the final event selection in the WW/WZ->lvJ channel, in each pT(J) bin of the...

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