# $\kappa _{{{\boldsymbol Z}}}$ INSPIRE search

This coupling is $\mathit CP$-conserving ($\mathit C$- and $\mathit P$- separately conserving).
VALUE EVTS DOCUMENT ID TECN  COMMENT
$0.924$ ${}^{+0.059}_{-0.056}$ $\pm0.024$ 7171 1
 2004 D
L3 ${\it{}E}^{\it{}ee}_{\rm{}cm}$ = $189 - 209$ GeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
2
 2019 CL
CMS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 13 TeV
3
 2017 S
ATLS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 7+8 TeV
4
 2017 O
CMS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 8 TeV
5
 2016 AR
ATLS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 8 TeV
6
 2016 P
ATLS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 8 TeV
7
 2013 AL
ATLS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 7 TeV
8
 2012 CD
ATLS ${\it{}E}^{\it{}pp}_{\rm{}cm}$ = 7 TeV
9
 2012 AC
CDF ${\it{}E}^{\it{}p\overline{\it{}p}}_{\rm{}cm}$ = 1.96 TeV
34 10
 2011
D0 ${\it{}E}^{\it{}p\overline{\it{}p}}_{\rm{}cm}$ = 1.96 TeV
17 11
 2006 H
D0 ${\it{}E}^{\it{}p\overline{\it{}p}}_{\rm{}cm}$ = 1.96 TeV
2.3 12
 2005 S
D0 ${\it{}E}^{\it{}p\overline{\it{}p}}_{\rm{}cm}$ = 1.96 TeV
1  ACHARD 2004D study $WW$ $-$pair production, single$-{{\mathit W}}$ production and single$-$photon production with missing energy from 189 to 209 GeV. The result quoted here is obtained using the $WW$ $-$pair production sample. Each parameter is determined from a single$-$parameter fit in which the other parameters assume their Standard Model values.
2  SIRUNYAN 2019CL study ${{\mathit W}}{{\mathit W}}$ and ${{\mathit W}}{{\mathit Z}}$ production in lepton + jet events, with one ${{\mathit W}}$ boson decaying leptonically (electron or muon), and another ${{\mathit W}}$ or ${{\mathit Z}}$ boson decaying hadronically, reconstructed as a single massive large-radius jet. In the electron channel 2,456 (2,235) events are selected in the ${{\mathit W}}{{\mathit W}}$ ( ${{\mathit W}}{{\mathit Z}}$ ) category, while in the muon channel 3,996 (3572) events are selected in the ${{\mathit W}}{{\mathit W}}$ ( ${{\mathit W}}{{\mathit Z}}$ ) category. Analysing the di-boson invariant mass distribution, the following 95$\%$ C.L. limit is obtained: 0.9921 $<$ ${{\mathit \kappa}_{{Z}}}$ $<$ 1.0082.
3  AABOUD 2017S analyze electroweak production of a ${{\mathit W}}$ boson in association with two jets at high dijet invariant mass, with the ${{\mathit W}}$ boson decaying to electron or muon plus neutrino. In the signal region of dijet mass larger than 1 TeV and leading-jet transverse momentum larger than 600 GeV, 30 events are observed in the data with $39$ $\pm4$ events expected in the Standard Model, yielding the following limit at 95$\%$ CL for the form factor cut-off scale ${{\mathit \Lambda}_{{FF}}}\rightarrow\infty{}$: $0.85<{{\mathit \kappa}_{{Z}}}<1.16$.
4  KHACHATRYAN 2017O analyse ${{\mathit W}}{{\mathit Z}}$ production where each boson decays into electrons or muons. Events are required to have a tri-lepton invariant mass larger than 100 GeV, with one of the lepton pairs having an invariant mass within 20 GeV of the ${{\mathit Z}}$ boson mass. The ${{\mathit Z}}$ transverse momentum spectrum is analyzed to set a 95$\%$ C.L. limit of: $0.79$ $<$ ${{\mathit \kappa}_{{Z}}}$ $<$ $1.25$.
5  AAD 2016AR study ${{\mathit W}}{{\mathit W}}$ production in pp collisions and select 6636 WW candidates in decay modes with electrons or muons with an expected background of $1546$ $\pm157$ events. Assuming the LEP formulation and setting the form-factor $\Lambda$ to infinity, a fit to the transverse momentum distribution of the leading charged lepton, leads to a 95$\%$ C.L. range of 0.975 $<{{\mathit \kappa}_{{Z}}}<$ 1.020.
6  AAD 2016P study ${{\mathit W}}{{\mathit Z}}$ production in ${{\mathit p}}{{\mathit p}}$ collisions and select 2091 ${{\mathit W}}{{\mathit Z}}$ candidates in 4 decay modes with electrons and muons, with an expected background of $1825$ $\pm7$ events. Analyzing the ${{\mathit W}}{{\mathit Z}}$ transverse momentum distribution, the resulting 95$\%$ C.L. limit is: 0.81 $<{{\mathit \kappa}_{{Z}}}<$ 1.30.
7  AAD 2013AL study ${{\mathit W}}{{\mathit W}}$ production in ${{\mathit p}}{{\mathit p}}$ collisions and select 1325 ${{\mathit W}}{{\mathit W}}$ candidates in decay modes with electrons or muons with an expected background of $369$ $\pm61$ events. Assuming the LEP formulation and setting the form-factor ${{\mathit \Lambda}}$ = infinity, a fit to the transverse momentum distribution of the leading charged lepton, leads to a 95$\%$ C.L. range of 0.957 $<$ ${{\mathit \kappa}_{{Z}}}$ $<$ 1.043. Supersedes AAD 2012AC.
8  AAD 2012CD study ${{\mathit W}}{{\mathit Z}}$ production in ${{\mathit p}}{{\mathit p}}$ collisions and select 317 ${{\mathit W}}{{\mathit Z}}$ candidates in three ${{\mathit \ell}}{{\mathit \nu}}$ decay modes with an expected background of $68.0$ $\pm10.0$ events. The resulting 95$\%$ C.L. range is: 0.63 $<$ ${{\mathit \kappa}_{{Z}}}<$ 1.57. Supersedes AAD 2012V.
9  AALTONEN 2012AC study ${{\mathit W}}{{\mathit Z}}$ production in ${{\mathit p}}{{\overline{\mathit p}}}$ collisions and select 63 ${{\mathit W}}{{\mathit Z}}$ candidates in three ${{\mathit \ell}}{{\mathit \nu}}$ decay modes with an expected background of $7.9$ $\pm1.0$ events. Based on the cross section and shape of the ${{\mathit Z}}$ transverse momentum spectrum, the following 95$\%$ C.L. range is reported: 0.61 $<$ ${{\mathit \kappa}_{{Z}}}$ $<$ 1.90 for a form factor of $\Lambda$ = 2 TeV.
10  ABAZOV 2011 study the ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ 3 ${{\mathit \ell}}{{\mathit \nu}}$ process arising in ${{\mathit W}}{{\mathit Z}}$ production. They observe 34 ${{\mathit W}}{{\mathit Z}}$ candidates with an estimated background of 6 events. An analysis of the $p_T$ spectrum of the ${{\mathit Z}}$ boson leads to a 95$\%$ C.L. limit of 0.600 $<{{\mathit \kappa}_{{Z}}}<$ 1.675, for a form factor $\Lambda$ = 2 TeV.
11  ABAZOV 2006H study ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit W}}{{\mathit W}}$ production with a subsequent decay ${{\mathit W}}$ ${{\mathit W}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit \nu}_{{e}}}{{\mathit e}^{-}}{{\overline{\mathit \nu}}_{{e}}}$ , ${{\mathit W}}$ ${{\mathit W}}$ $\rightarrow$ ${{\mathit e}^{\pm}}{{\mathit \nu}_{{e}}}{{\mathit \mu}^{\mp}}{{\mathit \nu}_{{\mu}}}$ or ${{\mathit W}}$ ${{\mathit W}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$ . The 95$\%$ C.L. limit for a form factor scale $\Lambda$ = 2 TeV is $0.55$ $<\kappa _{Z}<$ 1.55, fixing $\lambda _{Z}$=0. With the assumption that the ${{\mathit W}}{{\mathit W}}{{\mathit \gamma}}$ and ${{\mathit W}}{{\mathit W}}{{\mathit Z}}$ couplings are equal the 95$\%$ C.L. one-dimensional limit ($\Lambda$ = 2 TeV) is $0.68$ $<\kappa <$ 1.45.
12  ABAZOV 2005S study ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit W}}{{\mathit Z}}$ production with a subsequent trilepton decay to ${{\mathit \ell}}{{\mathit \nu}}{{\mathit \ell}^{\,'}}{{\overline{\mathit \ell}}^{\,'}}$ (${{\mathit \ell}}$ and ${{\mathit \ell}^{\,'}}$ = ${{\mathit e}}$ or ${{\mathit \mu}}$). Three events (estimated background $0.71$ $\pm0.08$ events) with $WZ$ decay characteristics are observed from which they derive limits on the anomalous couplings. The 95$\%$ CL limit for a form factor scale $\Lambda$ = 1 TeV is $-1.0$ $<$ ${{\mathit \kappa}_{{Z}}}$ $<$ 3.4, fixing ${{\mathit \lambda}_{{Z}}}$ and $\mathit g{}^{{{\mathit Z}}}_{1}$ to their Standard Model values.
References:
 SIRUNYAN 2019CL
JHEP 1912 062 Search for anomalous triple gauge couplings in WW and WZ production in lepton + jet events in proton-proton collisions at $\sqrt{s} =$ 13 TeV
 AABOUD 2017S
EPJ C77 474 Measurements of Electroweak $\mathit Wjj$ Production and Constraints on Anomalous Gauge Couplings with the ATLAS Detector
 KHACHATRYAN 2017O
EPJ C77 236 Measurement of the ${{\mathit W}}{{\mathit Z}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 and 8 TeV and Search for Anomalous Triple Gauge Couplings at $\sqrt {s }$ = 8 TeV
JHEP 1609 029 Measurement of Total and Differential ${{\mathit W}^{+}}{{\mathit W}^{-}}$ Production Cross Sections in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector and Limits on Anomalous Triple-Gauge-Boson Couplings
PR D93 092004 Measurements of ${{\mathit W}^{\pm}}{{\mathit Z}}$ Production Cross Sections in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector and Limits on Anomalous Gauge Boson Self-Couplings
PR D87 112001 Measurement of ${{\mathit W}^{+}}{{\mathit W}^{-}}$ Production in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV with the ATLAS Detector and Limits on Anomalous ${{\mathit W}}{{\mathit W}}{{\mathit Z}}$ and ${{\mathit W}}{{\mathit W}}{{\mathit \gamma}}$ Couplings
EPJ C72 2173 Measurement of ${{\mathit W}^{\pm}}{{\mathit Z}}$ Production in Proton$−$Proton Collisions at $\sqrt {s }$ = 7 TeV with the ATLAS Detector
PR D86 031104 Measurement of the ${{\mathit W}}{{\mathit Z}}$ Cross Section and Triple Gauge Couplings in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV
PL B695 67 Measurement of the ${{\mathit W}}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \ell}}{{\mathit \nu}}{{\mathit \ell}}{{\mathit \ell}}$ Cross Section and Limits on Anomalous Triple Gauge Couplings in ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 1.96 TeV
PR D74 057101 Limits on Anomalous Trilinear Gauge Couplings from ${{\mathit W}}$ ${{\mathit W}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ , ${{\mathit W}}$ ${{\mathit W}}$ $\rightarrow$ ${{\mathit e}^{\pm}}{{\mathit \mu}^{\mp}}$ , and ${{\mathit W}}$ ${{\mathit W}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ Events from ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV
PRL 95 141802 Production of ${{\mathit W}}{{\mathit Z}}$ Events in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ =1.96 TeV and Limits on Anomalous $\mathit WWZ$ Couplings
PL B586 151 Measurement of Triple Gauge Boson Couplings of the ${{\mathit W}}$ Boson at LEP