TRIPLE GAUGE COUPLINGS (TGC'S)
${{\widetilde{\boldsymbol \kappa}}}_{{{\boldsymbol Z}}}$
INSPIRE search
This coupling is $\mathit CP$-violating ($\mathit C$-conserving and $\mathit P$-violating).
| $\bf{
-0.12 {}^{+0.06}_{-0.04}}$
|
OUR AVERAGE
|
| $-0.09$ ${}^{+0.08}_{-0.05}$ |
1880 |
1 |
|
DLPH |
| $-0.20$ ${}^{+0.10}_{-0.07}$ |
1065 |
2 |
|
OPAL |
| • • • We do not use the following data for averages, fits, limits, etc. • • • |
|
|
3 |
|
ATLS |
|
|
4 |
|
LEP |
|
1
ABDALLAH 2008C determine this triple gauge coupling from the measurement of the spin density matrix elements in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ $\rightarrow$ ( ${{\mathit q}}{{\mathit q}}$) ( ${{\mathit \ell}}{{\mathit \nu}}$), where ${{\mathit \ell}}$ = ${{\mathit e}}$ or ${{\mathit \mu}}$. Values of all other couplings are fixed to their standard model values.
|
|
2
ABBIENDI 2001H study ${{\mathit W}}$-pair events, with one leptonically and one hadronically decaying ${{\mathit W}}$. The coupling is extracted using information from the ${{\mathit W}}$ production angle together with decay angles from the leptonically decaying ${{\mathit W}}$.
|
|
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 ${{\mathit \Lambda}_{{FF}}}\rightarrow\infty{}$: $-0.56$ $<{{\widetilde{\mathit \kappa}}_{{Z}}}<$ $0.56$.
|
|
4
BLINOV 2011 use the LEP-average ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ cross section data for $\sqrt {s }$ = $183 - 207$ GeV to determine an upper limit on the TGC ${{\widetilde{\mathit \kappa}}_{{Z}}}$. The average values of the cross sections as well as their correlation matrix, and standard model expectations of the cross sections are taken from the LEPEWWG note hep-ex/0612034. At 95$\%$ confidence level $\vert {{\widetilde{\mathit \kappa}}_{{Z}}}\vert $ $<$ 0.13.
|
|
| References: |
|
| EPJ C77 474 |
Measurements of Electroweak $\mathit Wjj$ Production and Constraints on Anomalous Gauge Couplings with the ATLAS Detector |
|
| PL B699 287 |
Upper Limits on Electric and Weak Dipole Moments of ${{\mathit W}}$-Boson |
|
| EPJ C54 345 |
Study of ${{\mathit W}}$ Boson Polarisations and Triple Gauge Boson Couplings in the Reaction ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit W}^{+}}{{\mathit W}^{-}}$ at LEP 2 |
|
| EPJ C19 229 |
Measurement of ${{\mathit W}}$ Boson Polarizations and $\mathit CP$ Violating Triple Gauge Couplings from ${{\mathit W}^{+}}{{\mathit W}^{-}}$ Production at LEP |
|
