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Search for $B^{0}_{s}$ oscillations using inclusive lepton events

A search for Bs oscillations is performed using a sample of semileptonic b-hadron decays collected by the ALEPH experiment during 1991-1995. Compared to previous inclusive lepton analyses, the prop er time resolution and b-flavour mistag rate are significantly improved. Additional sensitivity to Bs...

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Detalles Bibliográficos
Autores principales: Barate, R., Buskulic, D., Decamp, D., Ghez, Philippe, Goy, C., Lees, J.P., Lucotte, A., Merle, E., Minard, M.N., Nief, J.Y., Pietrzyk, B., Alemany, R., Boix, G., Casado, M.P., Chmeissani, M., Crespo, J.M., Delfino, M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Grauges, E., Juste, A., Martinez, M., Merino, G., Miquel, R., Mir, L.M., Park, I.C., Pascual, A., Riu, I., Sanchez, F., 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., Bright-Thomas, P., Casper, D., Cattaneo, M., Cerutti, F., Ciulli, V., Dissertori, G., Drevermann, H., Forty, R.W., Frank, M., Hagelberg, R., Halley, A.W., Hansen, J.B., Harvey, John, Janot, P., Jost, B., Lehraus, I., Mato, P., Minten, A., Moneta, L., Pacheco, A., Ranjard, F., Rolandi, Gigi, Rousseau, D., Schlatter, D., Schmitt, M., Schneider, O., Tejessy, W., Teubert, F., Tomalin, I.R., Wachsmuth, H., Ajaltouni, Z., Badaud, F., Chazelle, G., Deschamps, O., 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., Proriol, J., Rosnet, P., Hansen, J.D., Hansen, J.R., Hansen, P.H., Nilsson, B.S., Rensch, B., Waananen, A., Daskalakis, G., Kyriakis, A., Markou, C., Simopoulou, E., Siotis, I., Vayaki, A., Blondel, A., Bonneaud, G., Brient, J.C., Bourdon, P., Rouge, A., Rumpf, M., Valassi, A., Verderi, M., Videau, H., Focardi, E., Parrini, G., Zachariadou, K., Corden, M., Georgiopoulos, C., Jaffe, D.E., Antonelli, A., Bencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Chiarella, V., Felici, G., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G.P., Passalacqua, L., Pepe-Altarelli, M., Curtis, L., Lynch, J.G., Negus, P., O'Shea, V., Raine, C., Scarr, J.M., Smith, K., Teixeira-Dias, P., Thompson, A.S., Thomson, Evelyn J., Buchmuller, O., Dhamotharan, S., Geweniger, C., Graefe, G., 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., Martin, E.B., Marinelli, N., Moutoussi, A., Nash, J., Sedgbeer, J.K., Spagnolo, P., 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., Finch, A.J., Foster, F., Hughes, G., Jones, R.W.L., Robertson, N.A., Williams, M.I., Giehl, I., Hoffmann, C., Jakobs, K., Kleinknecht, K., Quast, G., Renk, B., Rohne, E., Sander, H.G., van Gemmeren, P., Zeitnitz, C., Aubert, J.J., Benchouk, C., Bonissent, A., Bujosa, G., Carr, J., Coyle, P., Etienne, F., Leroy, O., Motsch, F., Payre, P., Talby, M., Sadouki, A., Thulasidas, M., Trabelsi, K., Aleppo, M., Antonelli, M., Ragusa, F., Berlich, R., Buescher, Volker, Cowan, G., Dietl, H., Ganis, G., Lutjens, G., Mannert, C., Manner, W., Moser, H.G., Schael, S., Settles, R., Seywerd, H., Stenzel, H., Wiedenmann, W., Wolf, G., Boucrot, J., Callot, O., Chen, S., Cordier, A., Davier, M., Duflot, L., Grivaz, J.F., Heusse, P., Hocker, Andreas, Jacholkowska, A., Kim, D.W., Le Diberder, F., Lefrancois, J., Lutz, A.M., Schune, M.H., Tournefier, E., Veillet, J.J., Videau, I., Zerwas, D., Azzurri, P., Bagliesi, Giuseppe, Batignani, G., Bettarini, S., Boccali, T., Bozzi, C., Calderini, G., Carpinelli, M., Ciocci, M.A., Dell'Orso, R., Fantechi, R., Ferrante, I., Foa, L., Forti, F., Giassi, A., Giorgi, M.A., Gregorio, A., Ligabue, F., Lusiani, A., Marrocchesi, P.S., Messineo, A., Palla, F., Rizzo, G., Sanguinetti, G., Sciaba, A., Sguazzoni, G., Tenchini, R., Tonelli, G., Vannini, C., Venturi, A., Verdini, P.G., Blair, G.A., Bryant, L.M., Chambers, J.T., Green, M.G., Medcalf, T., Perrodo, P., Strong, J.A., von Wimmersperg-Toeller, J.H., Botterill, D.R., Clifft, R.W., Edgecock, T.R., Norton, P.R., Thompson, J.C., Wright, A.E., Bloch-Devaux, Brigitte, Colas, P., Emery, S., Kozanecki, W., Lancon, E., Lemaire, M.C., Locci, E., Perez, P., Rander, J., Renardy, J.F., Roussarie, A., Schuller, J.P., Schwindling, J., Trabelsi, A., Vallage, B., Black, S.N., Dann, J.H., Johnson, R.P., Kim, H.Y., Konstantinidis, N., Litke, A.M., McNeil, M.A., Taylor, G., Booth, C.N., Cartwright, S., Combley, F., Kelly, M.S., Lehto, M.H., Thompson, L.F., Affholderbach, K., Boehrer, Armin, Brandt, S., Grupen, C., Saraiva, P., Smolik, L., Stephan, F., Giannini, G., Gobbo, B., Musolino, G., Rothberg, J.E., Wasserbaech, S., 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., McNamara, P.A., III, Nachtman, J.M., Nielsen, J., Orejudos, W., Pan, Y.B., Saadi, Y., Scott, I.J., Walsh, J., Wu, San Lau, Wu, X., Zobernig, G.
Lenguaje:eng
Publicado: 1998
Materias:
Acceso en línea:https://dx.doi.org/10.1007/s100529901108
http://cds.cern.ch/record/360431
Descripción
Sumario:A search for Bs oscillations is performed using a sample of semileptonic b-hadron decays collected by the ALEPH experiment during 1991-1995. Compared to previous inclusive lepton analyses, the prop er time resolution and b-flavour mistag rate are significantly improved. Additional sensitivity to Bs mixing is obtained by identifying subsamples of events having a Bs purity which is higher than the average for the whole data sample. Unbinned maximum likelihood amplitude fits are performed to derive a lower limit of Dms>9.5 ps-1 at 95% CL. Combining with the ALEPH Ds based analyses yields Dms>9.6 ps-1 at 95% CL.