https://doi.org/10.1140/epjc/s10052-010-1254-1
Regular Article - Experimental Physics
Measurements of CP-conserving trilinear gauge boson couplings WWV (V≡γ,Z) in e+e− collisions at LEP2
1
Department of Physics and Astronomy, Iowa State University, Ames, IA, 50011-3160, USA
2
Physics Department, Universiteit Antwerpen, Universiteitsplein 1, 2610, Antwerpen, Belgium
3
IIHE, ULB-VUB, Pleinlaan 2, 1050, Brussels, Belgium
4
Physics Laboratory, University of Athens, Solonos Str. 104, 10680, Athens, Greece
5
Department of Physics, University of Bergen, Allégaten 55, 5007, Bergen, Norway
6
Dipartimento di Fisica, Università di Bologna and INFN, Viale C. Berti Pichat 6/2, 40127, Bologna, Italy
7
Centro Brasileiro de Pesquisas Físicas, rua Xavier Sigaud 150, 22290, Rio de Janeiro, Brazil
8
Inst. de Física, Univ. Estadual do Rio de Janeiro, rua São Francisco Xavier 524, Rio de Janeiro, Brazil
9
Lab. de Physique Corpusculaire, IN2P3-CNRS, Collège de France, 75231, Paris Cedex 05, France
10
CERN, 1211, Geneva 23, Switzerland
11
Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg, 67037, Strasbourg Cedex 2, France
12
DESY-Zeuthen, Platanenallee 6, 15735, Zeuthen, Germany
13
Institute of Nuclear Physics, N.C.S.R. Demokritos, P.O. Box 60228, 15310, Athens, Greece
14
FZU, Inst. of Phys. of the C.A.S. High Energy Physics Division, Na Slovance 2, 182 21, Praha 8, Czech Republic
15
Dipartimento di Fisica, Università di Genova and INFN, Via Dodecaneso 33, 16146, Genova, Italy
16
Institut des Sciences Nucléaires, IN2P3-CNRS, Université de Grenoble 1, 38026, Grenoble Cedex, France
17
Helsinki Institute of Physics and Department of Physical Sciences, 00014 University of Helsinki, P.O. Box 64, Helsinki, Finland
18
Joint Institute for Nuclear Research, Dubna, Head Post Office, P.O. Box 79, 101 000, Moscow, Russian Federation
19
Institut für Experimentelle Kernphysik, Universität Karlsruhe, Postfach 6980, 76128, Karlsruhe, Germany
20
Institute of Nuclear Physics PAN, Ul. Radzikowskiego 152, 31142, Krakow, Poland
21
Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, 30055, Krakow, Poland
22
LAL, Univ Paris-Sud, CNRS/IN2P3, Orsay, France
23
School of Physics and Chemistry, University of Lancaster, Lancaster, LA1 4YB, UK
24
LIP, IST, FCUL, Av. Elias Garcia, 14-1º, 1000, Lisboa Codex, Portugal
25
Department of Physics, University of Liverpool, P.O. Box 147, Liverpool, L69 3BX, UK
26
Dept. of Physics and Astronomy, Kelvin Building, University of Glasgow, Glasgow, G12 8QQ, UK
27
LPNHE, IN2P3-CNRS, Univ. Paris VI et VII, Tour 33 (RdC), 4 place Jussieu, 75252, Paris Cedex 05, France
28
Department of Physics, University of Lund, Sölvegatan 14, 223 63, Lund, Sweden
29
IPNL, IN2P3-CNRS, Université Claude Bernard de Lyon, 69622, Villeurbanne Cedex, France
30
Dipartimento di Fisica, Università di Milano and INFN-MILANO, Via Celoria 16, 20133, Milan, Italy
31
Dipartimento di Fisica, Univ. di Milano-Bicocca and INFN-MILANO, Piazza della Scienza 3, 20126, Milan, Italy
32
IPNP of MFF, Charles Univ., Areal MFF, V Holesovickach 2, 180 00, Praha 8, Czech Republic
33
NIKHEF, Postbus 41882, 1009 DB, Amsterdam, The Netherlands
34
Physics Department, National Technical University, Zografou Campus, 15773, Athens, Greece
35
Physics Department, University of Oslo, Blindern, 0316, Oslo, Norway
36
Dpto. Fisica, Univ. Oviedo, Avda. Calvo Sotelo s/n, 33007, Oviedo, Spain
37
Department of Physics, University of Oxford, Keble Road, Oxford, OX1 3RH, UK
38
Dipartimento di Fisica, Università di Padova and INFN, Via Marzolo 8, 35131, Padua, Italy
39
Rutherford Appleton Laboratory, Chilton, Didcot, OX11 OQX, UK
40
Dipartimento di Fisica, Università di Roma II and INFN, Tor Vergata, 00173, Rome, Italy
41
Dipartimento di Fisica, Università di Roma III and INFN, Via della Vasca Navale 84, 00146, Rome, Italy
42
DAPNIA/Service de Physique des Particules, CEA-Saclay, 91191, Gif-sur-Yvette Cedex, France
43
Instituto de Fisica de Cantabria (CSIC-UC), Avda. los Castros s/n, 39006, Santander, Spain
44
Inst. for High Energy Physics, Serpukov, P.O. Box 35, Protvino, (Moscow Region), Russian Federation
45
J. Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
46
Laboratory for Astroparticle Physics, University of Nova Gorica, Kostanjeviska 16a, 5000, Nova Gorica, Slovenia
47
Department of Physics, University of Ljubljana, 1000, Ljubljana, Slovenia
48
Fysikum, Stockholm University, Box 6730, 113 85, Stockholm, Sweden
49
Dipartimento di Fisica Sperimentale, Università di Torino and INFN, Via P. Giuria 1, 10125, Turin, Italy
50
INFN, Sezione di Torino and Dipartimento di Fisica Teorica, Università di Torino, Via Giuria 1, 10125, Turin, Italy
51
Dipartimento di Fisica, Università di Trieste and INFN, Via A. Valerio 2, 34127, Trieste, Italy
52
Istituto di Fisica, Università di Udine and INFN, 33100, Udine, Italy
53
Univ. Federal do Rio de Janeiro, C.P. 68528, Cidade Univ., Ilha do Fundão, 21945-970, Rio de Janeiro, Brazil
54
Department of Radiation Sciences, University of Uppsala, P.O. Box 535, 751 21, Uppsala, Sweden
55
IFIC, Valencia-CSIC, and D.F.A.M.N., U. de Valencia, Avda. Dr. Moliner 50, 46100, Burjassot (Valencia), Spain
56
Institut für Hochenergiephysik, Österr. Akad. d. Wissensch., Nikolsdorfergasse 18, 1050, Vienna, Austria
57
Inst. Nuclear Studies and University of Warsaw, Ul. Hoza 69, 00681, Warsaw, Poland
58
University of Warwick, Coventry, CV4 7AL, UK
59
Fachbereich Physik, University of Wuppertal, Postfach 100 127, 42097, Wuppertal, Germany
60
Physik-Institut, Universität Zürich, Zürich, Switzerland
* e-mail: jan.timmermans@cern.ch
Received:
25
November
2009
Revised:
12
January
2010
Published online:
11
February
2010
The data taken by Delphi at centre-of-mass energies between 189 and 209 GeV are used to place limits on the CP-conserving trilinear gauge boson couplings , λ
γ
and Δκ
γ
associated to W
+
W
− and single W production at Lep2. Using data from the jj
ℓ
ν, jjjj, jjX and ℓ
X final states, where j, ℓ and X represent a jet, a lepton and missing four-momentum, respectively, the following limits are set on the couplings when one parameter is allowed to vary and the others are set to their Standard Model values of zero:
Results are also presented when two or three parameters are allowed to vary. All observations are consistent with the predictions of the Standard Model and supersede the previous results on these gauge coupling parameters published by Delphi.
© Springer-Verlag / Società Italiana di Fisica, 2010