Measurement of W-pair production in $e^{+}e^{-}$ collisions at 183 GeV

The production of W+W- pairs is analysed in a data sample collected by ALEPH at a mean centre-of-mass energy of 182.7 GeV, corresponding to an integrated luminosity of 57 pb-1. Cross sections are given for different topologies of W decays into leptons or hadrons. Under Standard Model assumptions for...

Descripción completa

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., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Grauges, E., Juste, A., Martinez, M., Merino, G., Miquel, R., Mir, L.M., Morawitz, P., Pacheco, A., Park, I.C., Riu, I., Colaleo, A., Creanza, D., de Palma, M., Gelao, G., 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., Becker, U., Boix, G., Cattaneo, M., Ciulli, V., Dissertori, G., Drevermann, H., Forty, R.W., Frank, M., Gianotti, F., Halley, A.W., Hansen, J.B., Harvey, John, Janot, P., Jost, B., Lehraus, I., Leroy, O., Loomis, C., Maley, P., Mato, P., Minten, A., Moutoussi, A., Ranjard, F., Rolandi, Gigi, Rousseau, D., Schlatter, D., Schmitt, M., Schneider, O., Tejessy, W., Teubert, F., Tomalin, I.R., Tournefier, E., Vreeswijk, M., Wright, A.E., Ajaltouni, Z., Badaud, F., Chazelle, G., Deschamps, O., Dessagne, S., Falvard, A., Ferdi, C., Gay, P., Guicheney, C., Henrard, P., Jousset, J., Michel, B., Monteil, S., Montret, J.C., Pallin, D., Perret, P., Podlyski, F., Hansen, J.D., Hansen, J.R., Hansen, P.H., Nilsson, B.S., Rensch, B., 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., Valassi, A., Videau, H., Focardi, E., Parrini, G., Zachariadou, K., Cavanaugh, R., Corden, M., Georgiopoulos, C., Antonelli, A., Bencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G.P., Passalacqua, L., Pepe-Altarelli, M., Chalmers, M., Curtis, L., Lynch, J.G., Negus, P., O'Shea, V., Raeven, B., Raine, C., Smith, D., Teixeira-Dias, P., Thompson, A.S., Ward, J.J., Buchmuller, O., Dhamotharan, S., Geweniger, C., Hanke, P., Hansper, G., Hepp, V., Kluge, E.E., Putzer, A., Sommer, J., Tittel, K., Werner, S., Wunsch, M., Beuselinck, R., Binnie, D.M., Cameron, W., Dornan, P.J., Girone, M., Goodsir, S., Marinelli, N., Martin, E.B., Nash, J., Nowell, J., Sciaba, A., Sedgbeer, J.K., Spagnolo, P., Thomson, Evelyn J., Williams, M.D., Ghete, V.M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Betteridge, A.P., Bowdery, C.K., Buck, P.G., Colrain, P., Crawford, G., Ellis, G., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Robertson, N.A., Williams, M., van Gemmeren, P., Giehl, I., Holldorfer, F., Hoffmann, C., Jakobs, K., Kleinknecht, K., Krocker, M., Nurnberger, H.A., Quast, G., Renk, B., Rohne, E., Sander, H.G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Aubert, J.J., Benchouk, C., Bonissent, A., Carr, J., Coyle, P., Ealet, A., Fouchez, D., Motsch, F., Payre, P., Talby, M., Thulasidas, M., Tilquin, A., Aleppo, M., Antonelli, M., Ragusa, F., Berlich, R., Buescher, Volker, Dietl, H., Ganis, G., Huttmann, K., Lutjens, G., Mannert, C., Manner, W., Moser, H.G., Schael, S., Settles, R., Seywerd, H., Stenzel, H., Wiedenmann, W., Wolf, G., Azzurri, P., Boucrot, J., Callot, O., Chen, S., Davier, M., Duflot, L., Grivaz, J.F., Heusse, Ph., Jacholkowska, A., Kado, M., Lefrancois, J., Serin, L., Veillet, J.J., Videau, I., de Vivie de Regie, J.B., Zerwas, D., Bagliesi, Giuseppe, Bettarini, S., Boccali, T., Bozzi, C., Calderini, G., Dell'Orso, R., Fantechi, R., Ferrante, I., Giassi, A., Gregorio, A., Ligabue, F., Lusiani, A., Marrocchesi, P.S., Messineo, A., Palla, F., Rizzo, G., Sanguinetti, G., Sguazzoni, G., Tenchini, R., Vannini, C., Venturi, A., Verdini, P.G., Blair, G.A., Chambers, J.T., Coles, J., Cowan, G., Green, M.G., Hutchcroft, D.E., Jones, L.T., Medcalf, T., Strong, J.A., Von Wimmersperg-Toeller, J.H., Botterill, D.R., Clifft, R.W., Edgecock, T.R., Norton, P.R., Thompson, J.C., Bloch-Devaux, Brigitte, Colas, P., Fabbro, B., Faif, G., Lancon, E., Lemaire, M.C., Locci, E., Perez, P., Przysiezniak, H., Rander, J., Renardy, J.F., Rosowsky, A., Trabelsi, A., Tuchming, B., Vallage, B., Black, S.N., Dann, J.H., Kim, H.Y., Konstantinidis, N., Litke, A.M., McNeil, M.A., Taylor, G., Booth, C.N., Cartwright, S.L., Combley, F., Hodgson, P.N., Kelly, M.S., Lehto, M.H., Thompson, L.F., Affholderbach, K., Boehrer, Armin, Brandt, S., Foss, J., Grupen, C., Misiejuk, A., Prange, G., Sieler, U., Giannini, G., Gobbo, B., Putz, J., Rothberg, J.E., Wasserbaech, S., Williams, R.W., Armstrong, S.R., Charles, E., Elmer, P., Ferguson, D.P.S., Gao, Y., Gonzalez, S., Greening, T.C., Hayes, O.J., Hu, H., Jin, S., Mamier, G., McNamara, P.A., Nachtman, J.M., Nielsen, J., Orejudos, W., Pan, Y.B., Saadi, Y., Scott, I.J., Vogt, M., Walsh, J., Wu, S.L., Wu, X., Zobernig, G.
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00304-4
http://cds.cern.ch/record/382142
Descripción
Sumario:The production of W+W- pairs is analysed in a data sample collected by ALEPH at a mean centre-of-mass energy of 182.7 GeV, corresponding to an integrated luminosity of 57 pb-1. Cross sections are given for different topologies of W decays into leptons or hadrons. Under Standard Model assumptions for the W-pair production and decay, the W-pair cross section is measured to be 15.57+-0.62(stat.)+-0.29(syst.) pb. Using also the W-pair data samples collected by ALEPH at lower centre-of-mass energies, the decay branching ratio of the W boson into hadrons is measured to be B(W->hadrons)= 68.93+-1.21(stat.)+-0.51(syst.)%, allowing a determination of the CKM matrix element |Vcs|= 1.043 +- 0.058(stat.) +- 0.026(syst.). The agreement of the cross sections with the Standard Model prediction allows a limit to be set on the W decay rate to undetectable final states.

Ejemplares similares