Measurement of Single W Production and Triple Gauge Boson Couplings in e+e- Collisions at sqrt(s)=161-189 GeV

Single W production in the e+e- --> qqbarenu reaction has been studied using a <br>data sample with an integrated luminosity of 251 pb-1 collected between 1996 and <br>1998 with the OPAL detector at LEP2. A sample of 92 events is selected in the <br>data, for a MC prediction of 87.6+/-3.7 events. The selected events are used to <br>measure the parameters describing the triple gauge boson vertex gWW: <br>kg=1.15+0.18/-0.20 and lg=-0.47+0.39/-0.27, where the errors include both <br>statistical and systematic uncertainties and each parameter is determined <br>setting the other to its Standard Model value. The cross section S for the <br>e+e- --> qqbarenu process proceeding through t-channel diagrams is measured <br>in the kinematic region Mqq>40 GeV/c2 at sqrt(s)=189 GeV to be <br>S=(615+150/-135+/-60) fb, where the first error is statistical and the <br>second systematic. All measurements are consistent with the Standard Model <br>predictions.

Author dc:creator

• Verzocchi, Marco

Contributors dc:contributor

• Herten, Gregor

• Particle Physics
• Experiment,

Repository record source_url

https://freidok.uni-freiburg.de/data/32

OAI identifier oai:identifier

oai:freidok.uni-freiburg.de:32