Measurement of trilinear gauge boson couplings W W V, (V ≡ Z, γ) in e+e- collisions at 189 GeV

Christopher Parkes, P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, T. Alderweireld, G. D. Alekseev, R. Alemany, T. Allmendinger, P. P. Allport, S. Almehed, U. Amaldi, N. Amapane, S. Amato, E. Anashkin, E. G. Anassontzis, P. Andersson, A. Andreazza, S. AndringaN. Anjos, P. Antilogus, W. D. Apel, Y. Arnoud, B. Åsman, J. E. Augustin, A. Augustinus, P. Baillon, A. Ballestrero, P. Bambade, F. Barao, G. Barbiellini, R. Barbier, D. Y. Bardin, G. Barker, A. Baroncelli, M. Battaglia, M. Baubillier, K. H. Becks, M. Begalli, A. Behrmann, Yu Belokopytov, K. Belous, N. C. Benekos, A. C. Benvenuti, C. Berat, M. Berggren, L. Berntzon, D. Bertrand, M. Besancon, N. Besson, M. S. Bilenky, D. Bloch, H. M. Blom, L. Bol, M. Bonesini, M. Boonekamp, P. S L Booth, G. Borisov, C. Bosio, O. Botner, E. Boudinov, B. Bouquet, T. J V Bowcock, I. Boyko, I. Bozovic, M. Bozzo, M. Bracko, P. Branchini, R. A. Brenner, P. Bruckman, J. M. Brunet, L. Bugge, P. Buschmann, M. Caccia, M. Calvi, T. Camporesi, V. Canale, F. Carena, L. Carroll, C. Caso, M. V. Castillo Gimenez, A. Cattai, F. R. Cavallo, M. Chapkin, Ph Charpentier, P. Checchia, G. A. Chelkov, R. Chierici, P. Chliapnikov, P. Chochula, V. Chorowicz, J. Chudoba, K. Cieslik, P. Collins, R. Contri, E. Cortina, G. Cosme

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    Measurements of the trilinear gauge boson couplings WWγ and WWZ are presented using the data taken by DELPHI in 1998 at a centre-of-mass energy of 189 GeV and combined with DELPHI data at 183 GeV. Values are determined for ΔgZ1 and Δκγ, the differences of the WWZ charge coupling and of the WWγ dipole coupling from their Standard Model values, and for λγ, the WWγ quadrupole coupling. A measurement of the magnetic dipole and electric quadrupole moment of the W is ,extracted from the results for Δκγ and λγ. The study uses data from the final states jjℓν, jjjj, ℓX, jjX and γX, where j represents a quark jet, ℓ an identified lepton and X missing four-momentum. The observations are consistent with the predictions of the Standard Model. © 2001 Published by Elsevier Science B.V.
    Original languageEnglish
    Pages (from-to)9-23
    Number of pages14
    JournalPhysics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
    Issue number1-4
    Publication statusPublished - 15 Mar 2001


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