TRIPLE GAUGE COUPLINGS (TGC'S)
$\boldsymbol g{}^{{{\boldsymbol Z}}}_{4}$
INSPIRE search
This coupling is $\mathit CP$-violating ($\mathit C$-violating and $\mathit P$-conserving).
| $\bf{
-0.30 \pm0.17}$
|
OUR AVERAGE
|
| $-0.39$ ${}^{+0.19}_{-0.20}$ |
1880 |
1 |
|
DLPH |
| $-0.02$ ${}^{+0.32}_{-0.33}$ |
1065 |
2 |
|
OPAL |
|
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 ${{\mathit W}}$.
|
|
| References: |
|
| 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 |
|
