1. Measurement of the Bs0 lifetime and production rate with Ds−ℓ+ combinations in Z decays
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D Buskulic, D Casper, I De Bonis, D Decamp, P Ghez, C Goy, J.-P Lees, A Lucotte, M.-N Minard, P Odier, B Pietrzyk, F Ariztizabal, M Chmeissani, J.M Crespo, I Efthymiopoulos, E Fernandez, M Fernandez-Bosman, V Gaitan, Ll Garrido, M Martinez, S Orteu, A Pacheco, C Padilla, F Palla, A Pascual, J.A Perlas, F Sanchez, F Teubert, A Colaleo, D Creanza, M de Palma, A Farilla, G Gelao, M Girone, G Iaselli, G Maggi, M Maggi, N Marinelli, S Natali, S Nuzzo, A Ranieri, G Raso, F Romano, F Ruggieri, G Selvaggi, L Silvestris, P Tempesta, G Zito, X Huang, J Lin, Q Ouyang, T Wang, Y Xie, R Xu, S Xue, J Zhang, L Zhang, W Zhao, G Bonvicini, M Cattaneo, P Comas, P Coyle, H Drevermann, A Engelhardt, R.W Forty, M Frank, R Hagelberg, J Harvey, R Jacobsen, P Janot, B Jost, J Knobloch, I Lehraus, C Markou, E.B Martin, P Mato, H Meinhard, A Minten, R Miquel, T Oest, P Palazzi, J.R Pater, J.-F Pusztaszeri, F Ranjard, P Rensing, L Rolandi, D Schlatter, M Schmelling, O Schneider, W Tejessy, I.R Tomalin, A Venturi, H Wachsmuth, W Wiedenmann, T Wildish, W Witzeling, J Wotschack, Z Ajaltouni, M Bardadin-Otwinowska, A Barres, C Boyer, A Falvard, P Gay, C Guicheney, P Henrard, J Jousset, B Michel, S Monteil, J-C Montret, D Pallin, P Perret, F Podlyski, J Proriol, J.-M Rossignol, F Saadi, T Fearnley, J.B Hansen, J.D Hansen, J.R Hansen, P.H Hansen, B.S Nilsson, A Kyriakis, E Simopoulou, I Siotis, A Vayaki, K Zachariadou, A Blondel, G Bonneaud, J.C Brient, P Bourdon, L Passalacqua, A Rougé, M Rumpf, R Tanaka, A Valassi, M Verderi, H Videau, D.J Candlin, M.I Parsons, E Focardi, G Parrini, M Corden, M Delfino, C Georgiopoulos, D.E Jaffe, A Antonelli, G Bencivenni, G Bologna, F Bossi, P Campana, G Capon, V Chiarella, G Felici, P Laurelli, G Mannocchi, F Murtas, G.P Murtas, M Pepe-Altarelli, S.J Dorris, A.W Halley, I ten Have, I.G Knowles, J.G Lynch, W.T Morton, V O'Shea, C Raine, P Reeves, J.M Scarr, K Smith, M.G Smith, A.S Thompson, F Thomson, S Thorn, R.M Turnbull, U Becker, O Braun, C Geweniger, G Graefe, P Hanke, V Hepp, E.E Kluge, A Putzer, B Rensch, M Schmidt, J Sommer, H Stenzel, K Tittel, S Werner, M Wunsch, R Beuselinck, D.M Binnie, W Cameron, D.J Colling, P.J Dornan, N Konstantinidis, L Moneta, A Moutoussi, J Nash, G San Martin, J.K Sedgbeer, A.M Stacey, G Dissertori, P Girler, E Kneringer, D Kuhn, G Rudolph, C.K Bowdery, T.J Brodbeck, P Colrain, G Crawford, A.J Finch, F Foster, G Hughes, T Sloan, E.P Whelan, M.I Williams, A Galla, A.M Greene, K Kleinknecht, G Quast, J Raab, B Renk, H.-G Sander, R Wanke, P van Gemmeren, C Zeitnitz, J.J Aubert, A.M Bencheikh, C Benchouk, A Bonissent, G Bujosa, D Calvet, J Carr, C Diaconu, F Etienne, M Thulasidas, D Nicod, P Payre, D Rousseau, M Talby, I Abt, R Assmann, C Bauer, W Blum, D Brown, H Dietl, F Dydak, G Ganis, C Gotzhein, K Jakobs, H Kroha, G Lütjens, G Lutz, W Männer, H.-G Moser, R Richter, A Rosado-Schlosser, S Schael, R Settles, H Seywerd, U Stierlin, R.St Denis, G Wolf, R Alemany, J Boucrot, O Callot, A Cordier, F Courault, M Davier, L Duflot, J.-F Grivaz, Ph Heusse, M Jacquet, D.W Kim, F Le Diberder, J Lefrançois, A.-M Lutz, G Musolino, I Nikolic, H.J Park, I.C Park, M.-H Schune, S Simion, J.-J Veillet, I Videau, D Abbaneo, P Azzurri, G Bagliesi, G Batignani, S Bettarini, C Bozzi, G Calderini, M Carpinelli, M.A Ciocci, V Ciulli, R Dell'Orso, R Fantechi, I Ferrante, L Foà, F Forti, A Giassi, M.A Giorgi, A Gregorio, F Ligabue, A Lusiani, P.S Marrocchesi, A Messineo, G Rizzo, G Sanguinetti, A Sciabà, P Spagnolo, J Steinberger, R Tenchini, G Tonelli, G Triggiani, C Vannini, P.G Verdini, J Walsh, A.P Betteridge, G.A Blair, L.M Bryant, F Cerutti, Y Gao, M.G Green, D.L Johnson, T Medcalf, Ll.M Mir, P Perrodo, J.A Strong, V Bertin, D.R Botterill, R.W Clifft, T.R Edgecock, S Haywood, M Edwards, P Maley, P.R Norton, J.C Thompson, B Bloch-Devaux, P Colas, H Duarte, S Emery, W Kozanecki, E Lançon, M.C Lemaire, E Locci, B Marz, P Perez, J Rander, J.-F Renardy, A Rosowsky, A Roussarie, J.-P Schuller, J Schwindling, D Si Mohand, A Trabelsi, B Vallage, R.P Johnson, H.Y Kim, A.M Litke, M.A McNeil, G Taylor, A Beddall, C.N Booth, R Boswell, S Cartwright, F Combley, I Dawson, A Koksal, M Letho, W.M Newton, C Rankin, L.F Thompson, A Böhrer, S Brandt, G Cowan, E Feigl, C Grupen, G Lutters, J Minguet-Rodriguez, F Rivera, P Saraiva, L Smolik, F Stephan, M Apollonio, L Bosisio, R Della Marina, G Giannini, B Gobbo, F Ragusa, J Rothberg, S Wasserbaech, S.R Armstrong, L Bellantoni, P Elmer, Z Feng, D.P.S Ferguson, Y.S Gao, S González, J Grahl, J.L Harton, O.J Hayes, H Hu, P.A McNamara, J.M Nachtman, W Orejudos, Y.B Pan, Y Saadi, M Schmitt, I.J Scott, V Sharma, J.D Turk, A.M Walsh, Sau Lan Wu, X Wu, J.M Yamartino, M Zheng, G Zobernig, Buskulic, D, Casper, D, Debonis, I, Decamp, D, Ghez, P, Goy, C, Lees, Jp, Lucotte, A, Minard, Mn, Odier, P, Pietrzyk, B, Ariztizabal, F, Chmeissani, M, Crespo, Jm, Efthymiopoulos, I, Fernandez, E, Fernandezbosman, M, Gaitan, V, Garrido, L, Martinez, M, Orteu, S, Pacheco, A, Padilla, C, Palla, F, Pascual, A, Perlas, Ja, Sanchez, F, Teubert, F, Colaleo, A, Creanza, D, Depalma, M, Farilla, A, Gelao, G, Girone, M, Iaselli, G, Maggi, G, Maggi, M, Marinelli, N, Natali, S, Nuzzo, S, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Bonvicini, G, Comas, Mcp, Coyle, P, Drevermann, H, Engelhardt, A, Forty, Rw, Frank, M, Hagelberg, R, Harvey, J, Jacobsen, R, Janot, P, Jost, B, Knobloch, J, Lehraus, I, Markou, C, Martin, Eb, Mato, P, Meinhard, H, Minten, A, Miquel, R, Oest, T, Palazzi, Top, Pater, Jr, Pusztaszeri, Jf, Ranjard, F, Rensing, P, Rolandi, Luigi, Schlatter, D, Schmelling, M, Schneider, O, Tejessy, W, Tomalin, Ir, Venturi, A, Wachsmuth, H, Wiedenmann, W, Wildish, T, Witzeling, W, Wotschack, J, Ajaltouni, Z, Bardadinotwinowska, M, Barres, A, Boyer, C, Falvard, A, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, Jc, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rossignol, Jm, Saadi, F, Fearnley, T, Hansen, Jb, Hansen, Jd, Hansen, Jr, Hansen, Ph, Nilsson, B, Kyriakis, A, Simopoulou, E, Siotis, I, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, Jc, Bourdon, P, Passalacqua, L, Rouge, A, Rumpf, M, Tanaka, R, Valassi, A, Verderi, M, Videau, H, Candlin, Dj, Parsons, Mi, Focardi, E, Parrini, G, Corden, M, Delfino, M, Georgiopoulos, C, Jaffe, De, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, Gp, Pepealtarelli, M, Dorris, Dj, Halley, Aw, Tenhave, I, Knowles, Ig, Lynch, Jg, Morton, Wt, Oshea, V, Raine, C, Reeves, P, Scarr, Jm, Smith, K, Smith, Mg, Thompson, A, Thomson, F, Thorn, S, Turnbull, Rm, Becker, U, Braun, O, Geweniger, C, Graefe, G, Hanke, P, Hepp, V, Kluge, Ee, Putzer, A, Rensch, B, Schmidt, M, Sommer, J, Stenzel, H, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, Dm, Cameron, W, Colling, Dj, Dornan, Pj, Konstantinidis, N, Moneta, L, Moutoussi, A, Nash, J, Sanmartin, G, Sedgbeer, Jk, Stacey, Am, Dissertori, G, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bowdery, Ck, Brodbeck, Tj, Colrain, P, Crawford, G, Finch, Aj, Foster, F, Hughes, G, Sloan, T, Whelan, Ep, Williams, Mi, Galla, A, Greene, Am, Kleinknecht, K, Quast, G, Raab, J, Renk, B, Sander, Hg, Wanke, R, Vangemmeren, P, Zeitnitz, C, Aubert, Jj, Bencheikh, Am, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Diaconu, C, Etienne, F, Thulasidas, M, Nicod, D, Payre, P, Rousseau, D, Talby, M, Abt, I, Assmann, R, Bauer, C, Blum, W, Brown, D, Dietl, H, Dydak, F, Ganis, G, Gotzhein, C, Jakobs, K, Kroha, H, Lutjens, G, Lutz, G, Manner, W, Moser, Hg, Richter, R, Rosadoschlosser, A, Schael, S, Settles, R, Seywerd, H, Stierlin, U, Stdenis, R, Wolf, G, Alemany, R, Boucrot, J, Callot, O, Cordier, A, Courault, F, Davier, M, Duflot, L, Grivaz, Jf, Heusse, P, Jacquet, M, Kim, Dw, Lediberder, F, Lefrancois, J, Lutz, Am, Musolino, G, Nikolic, I, Park, Hj, Park, Ic, Schune, Mh, Simion, S, Veillet, Jj, Videau, I, Abbaneo, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, Ma, Ciulli, V, Dellorso, R, Fantechi, R, Ferrante, I, Foa, L, Forti, F, Giassi, A, Giorgi, Ma, Gregorio, A, Ligabue, Franco, Lusiani, Alberto, Marrocchesi, P, Messineo, A, Rizzo, G, Sanguinetti, G, Sciaba, A, Spagnolo, P, Steinberger, J, Tenchini, R, Tonelli, G, Triggiani, G, Vannini, C, Verdini, Pg, Walsh, J, Betteridge, Ap, Blair, Ga, Bryant, Lm, Cerutti, F, Gao, Y, Green, Mg, Johnson, Dl, Medcalf, T, Mir, Lm, Perrodo, P, Strong, Ja, Bertin, V, Botterill, Dr, Clifft, Rw, Edgecock, Tr, Haywood, S, Edwards, M, Maley, P, Norton, Pr, Thompson, Jc, Blochdevaux, B, Colas, P, Duarte, H, Emery, S, Kozanecki, W, Lancon, E, Lemaire, Mc, Locci, E, Marx, B, Perez, P, Rander, J, Renardy, Jf, Rosowsky, A, Roussarie, A, Schuller, Jp, Schwindling, J, Mohand, D, Trabelsi, A, Vallage, B, Johnson, Rp, Kim, Hy, Litke, Am, Mcneil, Ma, Taylor, G, Beddall, A, Booth, Cn, Boswell, R, Cartwright, S, Combley, F, Dawson, I, Koksal, A, Letho, M, Newton, Wm, Rankin, C, Thompson, Lf, Bohrer, A, Brandt, S, Cowan, G, Feigl, E, Grupen, C, Lutters, G, Minguetrodriguez, J, Rivera, F, Saraiva, P, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Dellamarina, R, Giannini, G, Gobbo, B, Ragusa, F, Rothberg, J, Wasserbaech, S, Armstrong, Sr, Bellantoni, L, Elmer, P, Feng, Z, Ferguson, Dp, Gonzalez, S, Grahl, J, Harton, Jl, Hayes, Oj, Hu, H, Mcnamara, Pa, Nachtman, Jm, Orejudos, W, Pan, Yb, Saadi, Y, Schmitt, M, Scott, Ij, Sharma, V, Turk, Jd, Walsh, Am, Wu, Sl, Wu, X, Yamartino, Jm, Zheng, M, Zobernig, G, Denis Richard/C 8997 2012 Ferrante Isidoro/F 1017 2012 Sanchez Federico/F 5809 2012, RI ANTONELLI ANTONELLA/C 6238 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S. t., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ALEPH, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Lees, J, Minard, M, Crespo, J, Perlas, J, Comas, M, Forty, R, Martin, E, Palazzi, T, Pater, J, Pusztaszeri, J, Rolandi, L, Tomalin, I, Montret, J, Rossignol, J, Hansen, J, Hansen, P, Brient, J, Candlin, D, Parsons, M, Jaffe, D, Murtas, G, Dorris, D, Halley, A, Knowles, I, Lynch, J, Morton, W, Scarr, J, Smith, M, Turnbull, R, Kluge, E, Binnie, D, Colling, D, Dornan, P, Sedgbeer, J, Stacey, A, Bowdery, C, Brodbeck, T, Finch, A, Whelan, E, Williams, M, Greene, A, Sander, H, Aubert, J, Bencheikh, A, Moser, H, Grivaz, J, Kim, D, Lutz, A, Park, H, Park, I, Schune, M, Veillet, J, Ciocci, M, Giorgi, M, Ligabue, F, Lusiani, A, Verdini, P, Betteridge, A, Blair, G, Bryant, L, Green, M, Johnson, D, Mir, L, Strong, J, Botterill, D, Clifft, R, Edgecock, T, Norton, P, Thompson, J, Lemaire, M, Renardy, J, Schuller, J, Johnson, R, Kim, H, Litke, A, Mcneil, M, Booth, C, Newton, W, Thompson, L, Armstrong, S, Ferguson, D, Harton, J, Hayes, O, Mcnamara, P, Nachtman, J, Pan, Y, Scott, I, Turk, J, Walsh, A, Wu, S, Yamartino, J, D., Buskulic, D., Casper, I., De Boni, D., Decamp, P., Ghez, C., Goy, J. P., Lee, A., Lucotte, M. N., Minard, P., Odier, B., Pietrzyk, F., Ariztizabal, M., Chmeissani, J. M., Crespo, I., Efthymiopoulo, E., Fernandez, M., Fernandez Bosman, V., Gaitan, Ll, Garrido, M., Martinez, S., Orteu, A., Pacheco, C., Padilla, F., Palla, A., Pascual, J. A., Perla, F., Sanchez, F., Teubert, A., Colaleo, D., Creanza, M., de Palma, A., Farilla, G., Gelao, M., Girone, G., Iaselli, G., Maggi, M., Maggi, N., Marinelli, S., Natali, S., Nuzzo, A., Ranieri, G., Raso, F., Romano, F., Ruggieri, G., Selvaggi, L., Silvestri, P., Tempesta, G., Zito, X., Huang, J., Lin, Q., Ouyang, T., Wang, Y., Xie, R., Xu, S., Xue, J., Zhang, L., Zhang, W., Zhao, G., Bonvicini, M., Cattaneo, P., Coma, P., Coyle, H., Drevermann, A., Engelhardt, R. W., Forty, M., Frank, R., Hagelberg, J., Harvey, R., Jacobsen, P., Janot, B., Jost, J., Knobloch, I., Lehrau, C., Markou, E. B., Martin, P., Mato, H., Meinhard, A., Minten, R., Miquel, T., Oest, P., Palazzi, J. R., Pater, J. F., Pusztaszeri, F., Ranjard, P., Rensing, L., Rolandi, D., Schlatter, M., Schmelling, O., Schneider, W., Tejessy, I. R., Tomalin, A., Venturi, H., Wachsmuth, W., Wiedenmann, T., Wildish, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Barre, C., Boyer, A., Falvard, P., Gay, C., Guicheney, P., Henrard, J., Jousset, B., Michel, S., Monteil, J. C., Montret, D., Pallin, P., Perret, F., Podlyski, J., Proriol, J. M., Rossignol, F., Saadi, T., Fearnley, J. B., Hansen, J. D., Hansen, J. R., Hansen, P. H., Hansen, B. S., Nilsson, A., Kyriaki, E., Simopoulou, I., Sioti, A., Vayaki, K., Zachariadou, A., Blondel, G., Bonneaud, J. C., Brient, P., Bourdon, L., Passalacqua, A., Rougé, M., Rumpf, R., Tanaka, A., Valassi, M., Verderi, H., Videau, D. J., Candlin, M. I., Parson, E., Focardi, G., Parrini, M., Corden, M., Delfino, C., Georgiopoulo, D. E., Jaffe, A., Antonelli, G., Bencivenni, G., Bologna, F., Bossi, P., Campana, G., Capon, V., Chiarella, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, M., Pepe Altarelli, S. J., Dorri, A. W., Halley, I., ten Have, I. G., Knowle, J. G., Lynch, W. T., Morton, V., O'Shea, C., Raine, P., Reeve, J. M., Scarr, K., Smith, M. G., Smith, A. S., Thompson, F., Thomson, S., Thorn, R. M., Turnbull, U., Becker, O., Braun, C., Geweniger, G., Graefe, P., Hanke, V., Hepp, E. E., Kluge, A., Putzer, B., Rensch, M., Schmidt, J., Sommer, H., Stenzel, K., Tittel, S., Werner, M., Wunsch, R., Beuselinck, D. M., Binnie, W., Cameron, D. J., Colling, P. J., Dornan, N., Konstantinidi, L., Moneta, A., Moutoussi, J., Nash, G., San Martin, J. K., Sedgbeer, A. M., Stacey, G., Dissertori, P., Girler, E., Kneringer, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, P., Colrain, G., Crawford, A. J., Finch, F., Foster, G., Hughe, T., Sloan, E. P., Whelan, M. I., William, A., Galla, A. M., Greene, K., Kleinknecht, G., Quast, J., Raab, B., Renk, H. G., Sander, R., Wanke, P., van Gemmeren, C., Zeitnitz, J. J., Aubert, A. M., Bencheikh, C., Benchouk, A., Bonissent, G., Bujosa, D., Calvet, J., Carr, C., Diaconu, F., Etienne, M., Thulasida, D., Nicod, P., Payre, D., Rousseau, M., Talby, I., Abt, R., Assmann, C., Bauer, W., Blum, D., Brown, H., Dietl, F., Dydak, G., Gani, C., Gotzhein, K., Jakob, H., Kroha, G., Lütjen, G., Lutz, W., Männer, H. G., Moser, R., Richter, A., Rosado Schlosser, S., Schael, R., Settle, H., Seywerd, U., Stierlin, R., St Deni, G., Wolf, R., Alemany, J., Boucrot, O., Callot, A., Cordier, F., Courault, M., Davier, L., Duflot, J. F., Grivaz, Ph, Heusse, M., Jacquet, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, G., Musolino, I., Nikolic, H. J., Park, I. C., Park, M. H., Schune, S., Simion, J. J., Veillet, I., Videau, D., Abbaneo, P., Azzurri, G., Bagliesi, G., Batignani, S., Bettarini, C., Bozzi, G., Calderini, M., Carpinelli, M. A., Ciocci, V., Ciulli, R., Dell'Orso, R., Fantechi, I., Ferrante, L., Foà, F., Forti, A., Giassi, M. A., Giorgi, Gregorio, Anna, F., Ligabue, A., Lusiani, P. S., Marrocchesi, A., Messineo, G., Rizzo, G., Sanguinetti, A., Sciabà, P., Spagnolo, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, P. G., Verdini, J., Walsh, A. P., Betteridge, G. A., Blair, L. M., Bryant, F., Cerutti, Y., Gao, M. G., Green, D. L., Johnson, T., Medcalf, Mir, L. l. M., P., Perrodo, J. A., Strong, V., Bertin, D. R., Botterill, R. W., Clifft, T. R., Edgecock, S., Haywood, M., Edward, P., Maley, P. R., Norton, J. C., Thompson, B., Bloch Devaux, P., Cola, H., Duarte, S., Emery, W., Kozanecki, E., Lançon, M. C., Lemaire, E., Locci, B., Marz, P., Perez, J., Rander, J. F., Renardy, A., Rosowsky, A., Roussarie, J. P., Schuller, J., Schwindling, D., Si Mohand, A., Trabelsi, B., Vallage, R. P., Johnson, H. Y., Kim, A. M., Litke, M. A., Mcneil, G., Taylor, A., Beddall, C. N., Booth, R., Boswell, S., Cartwright, F., Combley, I., Dawson, A., Koksal, M., Letho, W. M., Newton, C., Rankin, L. F., Thompson, A., Böhrer, S., Brandt, G., Cowan, E., Feigl, C., Grupen, G., Lutter, J., Minguet Rodriguez, F., Rivera, P., Saraiva, L., Smolik, F., Stephan, M., Apollonio, Bosisio, Luciano, R., Della Marina, Giannini, Gianrossano, B., Gobbo, F., Ragusa, J., Rothberg, S., Wasserbaech, S. R., Armstrong, L., Bellantoni, P., Elmer, Z., Feng, D. P. S., Ferguson, Y. S., Gao, S., González, J., Grahl, J. L., Harton, O. J., Haye, H., Hu, P. A., Mcnamara, J. M., Nachtman, W., Orejudo, Y. B., Pan, Y., Saadi, M., Schmitt, I. J., Scott, V., Sharma, J. D., Turk, A. M., Walsh, Sau Lan, Wu, X., Wu, J. M., Yamartino, M., Zheng, and G., Zobernig
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Meson ,010308 nuclear & particles physics ,Branching fraction ,Electron–positron annihilation ,High Energy Physics::Phenomenology ,Hadron ,01 natural sciences ,ALEPH Experiment ,Nuclear physics ,Yield (chemistry) ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,High Energy Physics::Experiment ,010306 general physics ,ALEPH experiment ,Particle Physics - Experiment ,Lepton ,Production rate - Abstract
The lifetime of the Bs0 meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different Ds− decay modes were reconstructed and combined with an opposite sign lepton as evidence of semileptonic Bs0 decays. Two hundred and eight Ds−l+ candidates satisfy selection criteria designed to ensure precise proper time reconstruction and yield a measured Bs0 lifetime of τ(Bs0) = 1.59−0.15+0.17 (stat) ±0.03 (syst) ps. Using a larger, less constrained sample of events, the product branching ratio is measured to be Br ( b → B s 0 ) · Br(B s 0 → D s − l + νX) = 0.82 ± 0.09 (stat) −0.14+0.13 (syst) %.
- Published
- 1995