Measurement of W polarisation at LEP

L3 Collaboration

doi:10.1016/S0370-2693(03)00172-2

Measurement of W polarisation at LEP

L3 Collaboration

Physics and Astronomy

University of Geneva
University of Florence
CIEMAT
CERN
University of Lausanne
University of Naples Federico II
Swiss Federal Institute of Technology Zurich
University of Basel
Nuclear Physics Institute
National Institute for Nuclear Physics
Alikhanov Institute for Theoretical and Experimental Physics
University of Michigan, Ann Arbor
Tata Institute of Fundamental Research
University of Rome La Sapienza
Florida Institute of Technology
University of Amsterdam
Université Savoie Mont Blanc
Paul Scherrer Institute
Purdue University
University of Perugia
Massachusetts Institute of Technology
Carnegie Mellon University
RWTH Aachen University
Hungarian Academy of Sciences

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The three different helicity states of W bosons produced in the reaction e⁺e^- →W⁺W^-→lνqq^-' 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 Wbosons, and its dependence on theWboson production angle. The fraction of longitudinally polarisedWbosons 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.

Original language	English
Pages (from-to)	147-156
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	557
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(03)00172-2
State	Published - Apr 3 2003

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10.1016/S0370-2693(03)00172-2

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@article{939a65602eb44c5e8f935372a2719bd3,

title = "Measurement of W polarisation at LEP",

abstract = "The three different helicity states of W bosons produced in the reaction e+e- →W+W-→lνqq-' 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 Wbosons, and its dependence on theWboson production angle. The fraction of longitudinally polarisedWbosons 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.",

author = "\{L3 Collaboration\} and P. Achard and O. Adriani and M. Aguilar-Benitez and J. Alcaraz and G. Alemanni and J. Allaby and A. Aloisio and Alviggi, \{M. G.\} and H. Anderhub and Andreev, \{V. P.\} and F. Anselmo and A. Arefiev and T. Azemoon and T. Aziz and P. Bagnaia and A. Bajo and G. Baksay and L. Baksay and Baldew, \{S. V.\} and S. Banerjee and Banerjee, \{S. W.\} and A. Barczyk and R. Barill{\`e}re and P. Bartalini and M. Basile and N. Batalova and R. Battiston and A. Bay and F. Becattini and U. Becker and F. Behner and L. Bellucci and R. Berbeco and J. Berdugo and P. Berges and B. Bertucci and Betev, \{B. L.\} and M. Biasini and M. Biglietti and A. Biland and Blaising, \{J. J.\} and Blyth, \{S. C.\} and Bobbink, \{G. J.\} and A. B{\"o}hm and L. Boldizsar and B. Borgia and S. Bottai and D. Bourilkov and M. Bourquin and K. Dehmelt",

note = "Publisher Copyright: {\textcopyright} 2003 Published by Elsevier Science.",

year = "2003",

month = apr,

day = "3",

doi = "10.1016/S0370-2693(03)00172-2",

language = "English",

volume = "557",

pages = "147--156",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "3-4",

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TY - JOUR

T1 - Measurement of W polarisation at LEP

AU - L3 Collaboration

AU - Achard, P.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Alcaraz, J.

AU - Alemanni, G.

AU - Allaby, J.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Anderhub, H.

AU - Andreev, V. P.

AU - Anselmo, F.

AU - Arefiev, A.

AU - Azemoon, T.

AU - Aziz, T.

AU - Bagnaia, P.

AU - Bajo, A.

AU - Baksay, G.

AU - Baksay, L.

AU - Baldew, S. V.

AU - Banerjee, S.

AU - Banerjee, S. W.

AU - Barczyk, A.

AU - Barillère, R.

AU - Bartalini, P.

AU - Basile, M.

AU - Batalova, N.

AU - Battiston, R.

AU - Bay, A.

AU - Becattini, F.

AU - Becker, U.

AU - Behner, F.

AU - Bellucci, L.

AU - Berbeco, R.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Biasini, M.

AU - Biglietti, M.

AU - Biland, A.

AU - Blaising, J. J.

AU - Blyth, S. C.

AU - Bobbink, G. J.

AU - Böhm, A.

AU - Boldizsar, L.

AU - Borgia, B.

AU - Bottai, S.

AU - Bourilkov, D.

AU - Bourquin, M.

AU - Dehmelt, K.

PY - 2003/4/3

Y1 - 2003/4/3

N2 - The three different helicity states of W bosons produced in the reaction e+e- →W+W-→lνqq-' 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 Wbosons, and its dependence on theWboson production angle. The fraction of longitudinally polarisedWbosons 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.

AB - The three different helicity states of W bosons produced in the reaction e+e- →W+W-→lνqq-' 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 Wbosons, and its dependence on theWboson production angle. The fraction of longitudinally polarisedWbosons 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.

UR - https://www.scopus.com/pages/publications/0037417186

U2 - 10.1016/S0370-2693(03)00172-2

DO - 10.1016/S0370-2693(03)00172-2

M3 - Article

AN - SCOPUS:0037417186

SN - 0370-2693

VL - 557

SP - 147

EP - 156

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Measurement of W polarisation at LEP

Abstract

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