The triple gauge-boson couplings involving the W are determined using data samples collected with the ALEPH detector at mean centre-of-mass energies of 183 GeV and 189 GeV, corresponding to integrated luminosities of 57 pb^-1 and 174 pb^-1, respectively. The couplings, g^Z_1, Kappa_gamma and lambda_gamma, are measured using W-pair events, single-W production and single-gamma production. Each coupling is measured individually with the other two coupling fixed at their Standard Model value. Including ALEPH results from lower energies, the 95% confidence level intervals for the deviation to the Standard Model are -0.087 < Dg^Z_1 < 0.141 -0.200 < DKappa_gamma < 0.258 -0.062 < Lambda_gamma < 0.147. Fits are also presented where two or all three couplings are allowed to vary. In addition, W-pair events are used to set limits on the C- or P-violating couplings g^V_4, g^V_5, Kappa_V, and Lambda_V, where V denotes either gamma or Z. No deviations from the Standard Model expectations are observed.
Measurement of triple gauge boson couplings at LEP energies up to 189-GeV / A. Heister, S. Schael, R. Barate, I. De Bonis, D. Decamp, Philippe Ghez, C. Goy, S. Jezequel, J.P. Lees, F. Martin, E. Merle, M.N. Minard, B. Pietrzyk, B. Trocme, S. Bravo, M.P. Casado, M. Chmeissani, J.M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Grauges, J. Lopez, M. Martinez, G. Merino, R. Miquel, L.M. Mir, A. Pacheco, D. Paneque, H. Ruiz, A. Colaleo, D. Creanza, N. De Filippis, M. de Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, P. Azzurri, T. Barklow, G. Boix, O. Buchmuller, M. Cattaneo, F. Cerutti, B. Clerbaux, G. Dissertori, H. Drevermann, R.W. Forty, M. Frank, F. Gianotti, T.C. Greening, J.B. Hansen, John Harvey, D.E. Hutchcroft, P. Janot, B. Jost, M. Kado, V. Lemaitre, P. Maley, P. Mato, A. Moutoussi, F. Ranjard, Gigi Rolandi, D. Schlatter, P. Spagnolo, W. Tejessy, F. Teubert, E. Tournefier, A. Valassi, J.J. Ward, A.E. Wright, Z. Ajaltouni, F. Badaud, S. Dessagne, A. Falvard, D. Fayolle, P. Gay, P. Henrard, J. Jousset, B. Michel, S. Monteil, J.C. Montret, D. Pallin, J.M. Pascolo, P. Perret, F. Podlyski, J.D. Hansen, J.R. Hansen, P.H. Hansen, B.S. Nilsson, A. Waananen, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, A. Blondel, J.C. Brient, F. Machefert, A. Rouge, M. Swynghedauw, R. Tanaka, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, A. Antonelli, M. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, V. Chiarella, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, L. Passalacqua, M. Pepe-Altarelli, M. Chalmers, A.W. Halley, J. Kennedy, J.G. Lynch, P. Negus, V. O'Shea, B. Raeven, D. Smith, A.S. Thompson, S. Wasserbaech, R. Cavanaugh, S. Dhamotharan, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, G. Leibenguth, A. Putzer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D.M. Binnie, W. Cameron, G. Davies, P.J. Dornan, M. Girone, N. Marinelli, J. Nowell, H. Przysiezniak, S. Rutherford, J.K. Sedgbeer, J.C. Thompson, R. White, V.M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, E. Bouhova-Thacker, C.K. Bowdery, D.P. Clarke, G. Ellis, A.J. Finch, F. Foster, G. Hughes, R.W.L. Jones, M.R. Pearson, N.A. Robertson, M. Smizanska, I. Giehl, F. Holldorfer, K. Jakobs, K. Kleinknecht, M. Krocker, A.S. Muller, H.A. Nurnberger, G. Quast, B. Renk, E. Rohne, H.G. Sander, S. Schmeling, H. Wachsmuth, C. Zeitnitz, T. Ziegler, A. Bonissent, J. Carr, P. Coyle, C. Curtil, A. Ealet, D. Fouchez, O. Leroy, T. Kachelhoffer, P. Payre, D. Rousseau, A. Tilquin, M. Aleppo, Simone S. Gilardoni, F. Ragusa, A. David, H. Dietl, G. Ganis, K. Huttmann, G. Lutjens, C. Mannert, W. Manner, H.G. Moser, R. Settles, H. Stenzel, G. Wolf, J. Boucrot, O. Callot, M. Davier, L. Duflot, J.F. Grivaz, P. Heusse, A. Jacholkowska, L. Serin, J.J. Veillet, I. Videau, J.B. de Vivie de Regie, C. Yuan, Giuseppe Bagliesi, T. Boccali, G. Calderini, V. Ciulli, L. Foa, A. Giammanco, A. Giassi, F. Ligabue, A. Messineo, F. Palla, G. Sanguinetti, A. Sciaba, G. Sguazzoni, R. Tenchini, A. Venturi, P.G. Verdini, O. Awunor, G.A. Blair, J. Coles, G. Cowan, A. Garcia-Bellido, M.G. Green, L.T. Jones, T. Medcalf, A. Misiejuk, J.A. Strong, P. Teixeira-Dias, R.W. Clifft, T.R. Edgecock, P.R. Norton, I.R. Tomalin, Brigitte Bloch-Devaux, D. Boumediene, P. Colas, B. Fabbro, E. Lancon, M.C. Lemaire, E. Locci, P. Perez, J. Rander, J.F. Renardy, A. Rosowsky, P. Seager, A. Trabelsi, B. Tuchming, B. Vallage, N. Konstantinidis, A.M. Litke, C. Loomis, G. Taylor, C.N. Booth, S. Cartwright, F. Combley, P.N. Hodgson, M. Lehto, L.F. Thompson, K. Affholderbach, Armin Boehrer, S. Brandt, C. Grupen, J. Hess, A. Ngac, G. Prange, U. Sieler, C. Borean, G. Giannini, H. He, J. Putz, J. Rothberg, S.R. Armstrong, K. Cranmer, P. Elmer, D.P.S. Ferguson, Y. Gao, S. Gonzalez, O.J. Hayes, H. Hu, S. Jin, J. Kile, P.A. McNamara,, III, J. Nielsen, W. Orejudos, Y.B. Pan, Y. Saadi, I.J. Scott, J.H. von Wimmersperg Toeller, J. Walsh, W. Wiedenmann, J. Wu, Sau Lan Wu, X. Wu, G. Zobernig. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 21:3(2001), pp. 423-441. [10.1007/s100520100730]
Measurement of triple gauge boson couplings at LEP energies up to 189-GeV
M. Aleppo;F. Ragusa;
2001
Abstract
The triple gauge-boson couplings involving the W are determined using data samples collected with the ALEPH detector at mean centre-of-mass energies of 183 GeV and 189 GeV, corresponding to integrated luminosities of 57 pb^-1 and 174 pb^-1, respectively. The couplings, g^Z_1, Kappa_gamma and lambda_gamma, are measured using W-pair events, single-W production and single-gamma production. Each coupling is measured individually with the other two coupling fixed at their Standard Model value. Including ALEPH results from lower energies, the 95% confidence level intervals for the deviation to the Standard Model are -0.087 < Dg^Z_1 < 0.141 -0.200 < DKappa_gamma < 0.258 -0.062 < Lambda_gamma < 0.147. Fits are also presented where two or all three couplings are allowed to vary. In addition, W-pair events are used to set limits on the C- or P-violating couplings g^V_4, g^V_5, Kappa_V, and Lambda_V, where V denotes either gamma or Z. No deviations from the Standard Model expectations are observed.
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