TRIPLE GAUGE COUPLINGS (TGC'S)

$\mathit g{}^{{{\mathit Z}}}_{5}$

INSPIRE   JSON  (beta) PDGID:
S043DG5
This coupling is $\mathit CP$-conserving but $\mathit C$- and $\mathit P$-violating.
VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.07 \pm0.09}$ OUR AVERAGE  Error includes scale factor of 1.1.
$-0.04$ ${}^{+0.13}_{-0.12}$ 9800 1
ABBIENDI
2004D
 OPAL ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $183 - 209$ GeV
$0.00$ $\pm0.13$ $\pm0.05$ 7171 2
ACHARD
2004D
 L3 ${\it{}E}^{\it{}ee}_{\rm{}cm}$= $189 - 209$ GeV
$-0.44$ ${}^{+0.23}_{-0.22}$ $\pm0.12$ 1154 3
ACCIARRI
1999Q
 L3 ${\it{}E}^{\it{}ee}_{\rm{}cm}$= 161$+172+$ 183 GeV
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.31$ $\pm0.23$ 4
EBOLI
2000
THEO LEP1, SLC+ Tevatron
1  ABBIENDI 2004D combine results from ${{\mathit W}^{+}}{{\mathit W}^{-}}$ in all decay channels. Only $\mathit CP$-conserving couplings are considered and each parameter is determined from a single-parameter fit in which the other parameters assume their Standard Model values. The 95$\%$ confidence interval is $-0.28$ $<$ $\mathit g{}^{Z}_{5}<+0.21$.
2  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.
3  ACCIARRI 1999Q study ${{\mathit W}}$-pair, single-${{\mathit W}}$, and single photon events.
4  EBOLI 2000 extract this indirect value of the coupling studying the non-universal one-loop contributions to the experimental value of the ${{\mathit Z}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ width ($\Lambda $=1 TeV is assumed).
References