Loading...
research article
Measurement of W polarisation at LEP
The three different helicity states of W bosons produced in the reaction e+e- → W+W- → lvqq̄′ at LEP are studied using leptonic and hadronic W decays. Data at centre-of-mass energies √s = 183-209 GeV are used to measure the polarisation of W bosons, and its dependence on the W boson production angle. The fraction of longitudinally polarised W bosons is measured to be 0.218 ± 0.027 ± 0.016 where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model expectation. © 2003 Published by Elsevier Science B.V.
Type
research article
Scopus ID
2-s2.0-0037417186
Authors
Achard, P.
•
Adriani, O.
•
Aguilar-Benitez, M.
•
Alcaraz, J.
•
Alemanni, G.
•
Allaby, J.
•
Aloisio, A.
•
Alviggi, M.G.
•
Anderhub, H.
•
Andreev, V.P.
Publication date
2003
Volume
557
Issue
3-4
Start page
147
End page
156
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 5, 2010
Use this identifier to reference this record