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.


Published in:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 557, 3-4, 147-156
Year:
2003
ISSN:
03702693
Other identifiers:
Scopus: 2-s2.0-0037417186
Laboratories:




 Record created 2010-11-05, last modified 2018-01-28


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