Measurement of W-pair production in $e^{+}e^{-}$ collisions at 189 GeV

The production of W-pairs is analysed in a data samplecollected by ALEPH at a mean centre-of-mass energy of 188.6 GeV,corresponding to an integrated luminosity of 174.2 pb^-1. Crosssections are given for different topologies of W decays intoleptons or hadrons. Combining all final states and assuming...

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Detalles Bibliográficos
Autores principales: Barate, R., Decamp, D., Ghez, Philippe, Goy, C., Jezequel, S., Lees, J.P., Martin, F., Merle, E., Minard, M.N., Pietrzyk, B., Alemany, R., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Grauges, E., Martinez, M., Merino, G., Miquel, R., Mir, L.M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Boix, G., Buchmuller, O., Cattaneo, M., Cerutti, F., Dissertori, G., Drevermann, H., Forty, R.W., Frank, M., Gianotti, F., Greening, T.C., Halley, A.W., Hansen, J.B., Harvey, John, Janot, P., Jost, B., Kado, M., Lemaitre, V., Maley, P., Mato, P., Minten, A., Moutoussi, A., Ranjard, F., Rolandi, Gigi, Schlatter, D., Schmitt, M., Schneider, O., Spagnolo, P., Tejessy, W., Teubert, F., Tournefier, E., Valassi, A., Ward, J.J., Wright, A.E., Ajaltouni, Z., Badaud, F., Chazelle, G., Deschamps, O., Dessagne, S., Falvard, A., Gay, P., Guicheney, C., Henrard, P., Jousset, J., Michel, B., Monteil, S., Montret, J.C., Pallin, D., Pascolo, J.M., Perret, P., Podlyski, F., Hansen, J.D., Hansen, J.R., Hansen, P.H., Nilsson, B.S., Waananen, A., Daskalakis, G., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Blondel, A., Brient, J.C., Machefert, F., Rouge, A., Swynghedauw, M., Tanaka, R., Videau, H., Focardi, E., Parrini, G., Zachariadou, K., Antonelli, A., Bencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G.P., Passalacqua, L., Pepe-Altarelli, M., Chalmers, M., Kennedy, J., Lynch, J.G., Negus, P., O'Shea, V., Raeven, B., Smith, D., Teixeira-Dias, P., Thompson, A.S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E.E., Leibenguth, G., Putzer, A., Tittel, K., Werner, S., Wunsch, M., Beuselinck, R., Binnie, D.M., Cameron, W., Davies, G., Dornan, P.J., Girone, M., Marinelli, N., Nowell, J., Przysiezniak, H., Sedgbeer, J.K., Thompson, J.C., Thomson, Evelyn J., White, R., Ghete, V.M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bowdery, C.K., Buck, P.G., Clarke, D.P., Ellis, G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Robertson, N.A., Smizanska, M., Giehl, I., Holldorfer, F., Jakobs, K., Kleinknecht, K., Krocker, M., Muller, A.S., Nurnberger, H.A., Quast, G., Renk, B., Rohne, E., Sander, H.G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Carr, J., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Leroy, O., Kachelhoffer, T., Payre, P., Rousseau, D., Tilquin, A., Aleppo, M., Antonelli, M., Gilardoni, Simone S., Ragusa, F., Dietl, H., Ganis, G., Huttmann, K., Lutjens, G., Mannert, C., Manner, W., Moser, H.G., Schael, S., Settles, R., Stenzel, H., Wiedenmann, W., Wolf, G., Azzurri, P., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J.F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J.J., Videau, I., de Vivie de Regie, J.B., Zerwas, D., Bagliesi, Giuseppe, Boccali, T., Calderini, G., Ciulli, V., Foa, L., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Rizzo, G., Sanguinetti, G., Sciaba, A., Sguazzoni, G., Tenchini, R., Venturi, A., Verdini, P.G., Blair, G.A., Coles, J., Cowan, G., Green, M.G., Hutchcroft, D.E., Jones, L.T., Medcalf, T., Strong, J.A., von Wimmersperg-Toeller, J.H., Clifft, R.W., Edgecock, T.R., Norton, P.R., Tomalin, I.R., Bloch-Devaux, Brigitte, Colas, P., Fabbro, B., Faif, G., Lancon, E., Lemaire, M.C., Locci, E., Perez, P., Rander, J., Renardy, J.F., Rosowsky, A., Seager, P., Trabelsi, A., Tuchming, B., Vallage, B., Black, S.N., Dann, J.H., Loomis, C., Kim, H.Y., Konstantinidis, N., Litke, A.M., McNeil, M.A., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Hodgson, P.N., Lehto, M., Thompson, L.F., Affholderbach, K., Boehrer, Armin, Brandt, S., Grupen, C., Hess, J., Misiejuk, A., Prange, G., Sieler, U., Borean, C., Giannini, G., Gobbo, B., He, H., Putz, J., Rothberg, J., Wasserbaech, S., Armstrong, S.R., Cranmer, K., Elmer, P., Ferguson, D.P.S., Gao, Y., Gonzalez, S., Hayes, O.J., Hu, H., Jin, S., Kile, J., McNamara, P.A., III, Nielsen, J., Orejudos, W., Pan, Y.B., Saadi, Y., Scott, I.J., Walsh, J., Wu, J., Wu, Sau Lan, Wu, X., Zobernig, G.
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(00)00624-9
http://cds.cern.ch/record/434702
Descripción
Sumario:The production of W-pairs is analysed in a data samplecollected by ALEPH at a mean centre-of-mass energy of 188.6 GeV,corresponding to an integrated luminosity of 174.2 pb^-1. Crosssections are given for different topologies of W decays intoleptons or hadrons. Combining all final states and assumingStandard Model branching fractions, the total W-pair cross sectionis measured to be 15.71 +- 0.34 (stat) +- 0.18 (syst) pb.Using also the W-pair data samples collected by ALEPH at lowercentre-of-mass energies, the decay branching fraction of the W bosoninto hadrons is measured to be BR (W > hadrons) = 66.97+- 0.65 (stat) +- 0.32 (syst) %, allowing a determination of theCKM matrix element |V(cs)|= 0.951 +- 0.030 (stat) +- 0.015 (syst).

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