Measurements are presented of the polarisation of W+W- boson pairs produced in e+e- collisions, and of CP-violating WWZ and WWGamma trilinear gauge couplings. The data were recorded by the OPAL experiment at LEP during 1998, where a total integrated luminosity of 183 pb^-1 was obtained at a centre-of-mass energy of 189 GeV. The measurements are performed through a spin density matrix analysis of the W boson decay products. The fraction of W bosons produced with longitudinal polarisation was found to be sigma_L/sigma_total = (21.0 +- 3.3 +- 1.6)% where the first error is statistical and the second systematic. The joint W boson pair production fractions were found to be sigma_TT/sigma_total = (78.1 +- 9.0 +- 3.2) %, sigma_LL/sigma_total = (20...
34 pages, 17 figures, Accepted by Eur. Phys. J. CA determination of the single W Spin Density Matrix...
A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPA...
The three different helicity states of W bosons produced in the reaction e+ e- -> W+ W- -> l nu q q~...
Measurements are presented of the polarisation of W+W- boson pairs produced in e+e- collisions, and ...
Measurements are presented of the polarisation of W+ W− boson pairs produced in e+ e− collisions, an...
Measurements of the trilinear gauge boson vertex coupling (TGC) pa-rameters and the W polarisation o...
A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPA...
A determination of the single W spin density matrix (SDM) elements in the reaction e(+)e(-) -> W+W--...
A determination of the single W spin density matrix (SDM) elements in the reaction e(+)e(-) -> W+...
Elements of the spin density matrix for W bosons in e(+)e(-) --> W+W- --> q (q) over barq'lv(l) even...
Elements of the spin density matrix for W bosons in e+e- -> W+W- -> qqln events are measured from da...
A determination of the single W spin density matrix (SDM) elements in the reaction e+e-→W+W-&#...
Studies of W boson polarisation properties performed using the W pair production process at LEP2 are...
34 pages, 17 figures, Accepted by Eur. Phys. J. CA determination of the single W Spin Density Matrix...
A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPA...
The three different helicity states of W bosons produced in the reaction e+ e- -> W+ W- -> l nu q q~...
Measurements are presented of the polarisation of W+W- boson pairs produced in e+e- collisions, and ...
Measurements are presented of the polarisation of W+ W− boson pairs produced in e+ e− collisions, an...
Measurements of the trilinear gauge boson vertex coupling (TGC) pa-rameters and the W polarisation o...
A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPA...
A determination of the single W spin density matrix (SDM) elements in the reaction e(+)e(-) -> W+W--...
A determination of the single W spin density matrix (SDM) elements in the reaction e(+)e(-) -> W+...
Elements of the spin density matrix for W bosons in e(+)e(-) --> W+W- --> q (q) over barq'lv(l) even...
Elements of the spin density matrix for W bosons in e+e- -> W+W- -> qqln events are measured from da...
A determination of the single W spin density matrix (SDM) elements in the reaction e+e-→W+W-&#...
Studies of W boson polarisation properties performed using the W pair production process at LEP2 are...
34 pages, 17 figures, Accepted by Eur. Phys. J. CA determination of the single W Spin Density Matrix...
A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPA...
The three different helicity states of W bosons produced in the reaction e+ e- -> W+ W- -> l nu q q~...