D. Zeppenfeld

Probing the weak boson sector in e+e−→W+W−

A detailed analysis of W pair production in e+e− annihilation at LEP-II energies is presented by using helicity amplitudes for the process e+e−→W+W− with arbitrary WWγ and WWZ couplings. Expressing the complete angular distribution of W decay products in terms of these helicity amplitudes, we perform a systematic search for the most sensitive angular distributions or correlations for anomalous couplings. As a result precise tests of the gauge-theory cancellations between different diagrams are suggested. Angular distributions sensitive to W+W− rescattering effects and/or CP-violating vector boson couplings are studied as well. Complete helicity amplitudes for the process e+e− → W+W− → (q1q2g)(q3q4g) with arbitrary quark masses and finite W width are presented in a form convenient for their direct numerical evaluation. Amplitudes for the processes e+e− → ZZ and Zγ are also included.

VBFNLO: A Parton level Monte Carlo for processes with electroweak bosons

VBFNLO is a flexible parton level Monte Carlo program for the simulation of vector boson fusion (VBF), QCD induced single and double vector boson production plus two jets, and double and triple vector boson production (plus jet) in hadronic collisions at next-to-leading order (NLO) in the strong coupling constant, as well as Higgs boson plus two jet production via gluon fusion at the one-loop level. For the new version -- Version 2.7.0 -- several major enhancements have been included into VBFNLO. The following new production processes have been added:

Extracting Higgs boson couplings from CERN LHC data

W\gamma jj

Measuring Higgs boson couplings at the CERN LHC

in VBF,

Next-to-leading order jet distributions for Higgs boson production via weak boson fusion

HHjj

Helicity Amplitudes for Heavy Lepton Production in e+ e- Annihilation

in VBF,

Determining the Structure of Higgs Couplings at the CERN Large Hadron Collider

W

Amplitudes for multi-parton processes involving a current at e+e−, e±p, and hadron colliders☆

,

H → WW as the discovery mode for a light Higgs boson

Wj

Anomalous Higgs boson couplings in vector boson fusion at the CERN LHC

,