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Search for the $B_{c}$ meson in hadronic Z decays

A search for the Bc meson decaying into the channels J/psi pi+ and J/psi l nu (l = e or mu) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and...

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Detalles Bibliográficos
Autores principales:	Barate, R, Buskulic, Damir, Décamp, D, Ghez, P, Goy, C, Lees, J P, Lucotte, A, Minard, M N, Nief, J Y, Pietrzyk, B, Casado, M P, Chmeissani, M, Comas, P, Crespo, J M, Delfino, M C, Fernández, E, Fernández-Bosman, M, Garrido, L, Juste, A, Martínez, M, Miquel, R, Mir, L M, Orteu, S, Padilla, C, Park, I C, Pascual, A, Perlas, J A, Riu, I, Sánchez, F, Teubert, F, Colaleo, A, Creanza, D, De Palma, M, Gelao, G, Iaselli, Giuseppe, Maggi, G, Maggi, M, Marinelli, N, 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, Alemany, R, Becker, U, Bazarko, A O, Bright-Thomas, P G, Cattaneo, M, Cerutti, F, Drevermann, H, Forty, Roger W, Frank, M, Hagelberg, R, Harvey, J, Janot, P, Jost, B, Kneringer, E, Knobloch, J, Lehraus, Ivan, Lutters, G, Mato, P, Minten, Adolf G, Moneta, L, Pacheco, A, Pusztaszeri, J F, Ranjard, F, Rensing, P E, Rizzo, G, Rolandi, Luigi, Schlatter, W D, Schmitt, M, Schneider, O, Tejessy, W, Tomalin, I R, Wachsmuth, H W, Wagner, A, Ajaltouni, Ziad J, Barrès, A, Boyer, C, 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, Rossignol, J M, Fearnley, Tom, Hansen, J B, Hansen, J D, Hansen, J R, Hansen, P H, Nilsson, B S, Rensch, B, Wäänänen, A, Daskalakis, G, Kyriakis, A, Markou, C, Simopoulou, Errietta, Siotis, I, Vayaki, Anna, Blondel, A, Bonneaud, G R, Brient, J C, Bourdon, P, Rougé, A, Rumpf, M, Valassi, Andrea, Verderi, M, Videau, H L, Candlin, D J, Parsons, M I, Focardi, E, Parrini, G, Zachariadou, K, Corden, M, Georgiopoulos, C H, Jaffe, D E, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Casper, David William, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G P, Passalacqua, L, Pepé-Altarelli, M, Curtis, L, Dorris, S J, Halley, A W, Knowles, I G, Lynch, J G, O'Shea, V, Raine, C, Scarr, J M, Smith, K, Teixeira-Dias, P, Thompson, A S, Thomson, E, Thomson, F, Turnbull, R M, Geweniger, C, Graefe, G, Hanke, P, Hansper, G, Hepp, V, Kluge, E E, Putzer, A, Schmidt, M, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, David M, Cameron, W, Dornan, Peter J, Girone, M, Goodsir, S M, Martin, E B, Moutoussi, A, Nash, J, Sedgbeer, J K, Stacey, A M, Williams, M D, Dissertori, G, Girtler, P, Kuhn, D, Rudolph, G, Betteridge, A P, Bowdery, C K, Colrain, P, Crawford, G, Finch, A J, Foster, F, Hughes, G, Sloan, Terence, Williams, M I, Galla, A, Giehl, I, Greene, A M, Hoffmann, C, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, H G, Van Gemmeren, P, Zeitnitz, C, Aubert, Jean-Jacques, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Coyle, P, Diaconu, C A, Etienne, F, Konstantinidis, N P, Leroy, O, Motsch, F, Payre, P, Rousseau, D, Talby, M, Sadouki, A, Thulasidas, M, Trabelsi, K, Aleppo, M, Ragusa, F, Berlich, R, Blum, Walter, Büscher, V, Dietl, H, Dydak, Friedrich, Ganis, G, Gotzhein, C, Kroha, H, Lütjens, G, Lutz, Gerhard, Männer, W, Moser, H G, Richter, R H, Rosado-Schlosser, A, Schael, S, Settles, Ronald, Seywerd, H C J, Saint-Denis, R, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Chen, S, Choi, Y, Cordier, A, Davier, M, Duflot, L, Grivaz, J F, Heusse, P, Höcker, A, Jacholkowska, A, Jacquet, M, Kim, D W, Le Diberder, F R, Lefrançois, J, Lutz, A M, Nikolic, I A, Schune, M H, Simion, S, Tournefier, E, Veillet, J J, Videau, I, Zerwas, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, M A, Ciulli, V, Dell'Orso, R, Fantechi, R, Ferrante, I, Foà, L, Forti, F, Giassi, A, Giorgi, M A, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, P S, Messineo, A, Palla, Fabrizio, Sanguinetti, G, Sciabà, A, Spagnolo, P, Steinberger, Jack, Tenchini, Roberto, Tonelli, G, Vannini, C, Venturi, A, Verdini, P G, Blair, G A, Bryant, L M, Chambers, J T, Gao, Y, Green, M G, Medcalf, T, Perrodo, P, Strong, J A, Von Wimmersperg-Töller, J H, Botterill, David R, Clifft, R W, Edgecock, T R, Haywood, S, Maley, P, Norton, P R, Thompson, J C, Wright, A E, Bloch-Devaux, B, Colas, P, Emery, S, Kozanecki, Witold, Lançon, E, Lemaire, M C, Locci, E, Pérez, 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, Litke, A M, McNeil, M A, Taylor, G, Booth, C N, Boswell, R, Brew, C A J, Cartwright, S L, Combley, F, Kelly, M S, Lehto, M H, Newton, W M, Reeve, J, Thompson, L F, Böhrer, A, Brandt, S, Cowan, G D, Grupen, Claus, Saraiva, P, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Della Marina, R, Giannini, G, Gobbo, B, Musolino, G, Rothberg, J E, Wasserbaech, S R, Armstrong, S R, Charles, E, Elmer, P, Ferguson, D P S, Gao, Y S, González, S, Greening, T C, Hayes, O J, Hu, H, Jin, S, McNamara, P A, Nachtman, J M, Nielsen, J, Orejudos, W, Pan, Y B, Saadi, Y, Scott, I J, Walsh, J, Wu Sau Lan, Wu, X, Yamartino, J M, Zobernig, G
Lenguaje:	eng
Publicado:	1997
Materias:	Particle Physics - Experiment
Acceso en línea:	https://dx.doi.org/10.1016/S0370-2693(97)00461-9 http://cds.cern.ch/record/322714

_version_	1780890777434456064
author	Barate, R Buskulic, Damir Décamp, D Ghez, P Goy, C Lees, J P Lucotte, A Minard, M N Nief, J Y Pietrzyk, B Casado, M P Chmeissani, M Comas, P Crespo, J M Delfino, M C Fernández, E Fernández-Bosman, M Garrido, L Juste, A Martínez, M Miquel, R Mir, L M Orteu, S Padilla, C Park, I C Pascual, A Perlas, J A Riu, I Sánchez, F Teubert, F Colaleo, A Creanza, D De Palma, M Gelao, G Iaselli, Giuseppe Maggi, G Maggi, M Marinelli, N 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 Alemany, R Becker, U Bazarko, A O Bright-Thomas, P G Cattaneo, M Cerutti, F Drevermann, H Forty, Roger W Frank, M Hagelberg, R Harvey, J Janot, P Jost, B Kneringer, E Knobloch, J Lehraus, Ivan Lutters, G Mato, P Minten, Adolf G Moneta, L Pacheco, A Pusztaszeri, J F Ranjard, F Rensing, P E Rizzo, G Rolandi, Luigi Schlatter, W D Schmitt, M Schneider, O Tejessy, W Tomalin, I R Wachsmuth, H W Wagner, A Ajaltouni, Ziad J Barrès, A Boyer, C 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 Rossignol, J M Fearnley, Tom Hansen, J B Hansen, J D Hansen, J R Hansen, P H Nilsson, B S Rensch, B Wäänänen, A Daskalakis, G Kyriakis, A Markou, C Simopoulou, Errietta Siotis, I Vayaki, Anna Blondel, A Bonneaud, G R Brient, J C Bourdon, P Rougé, A Rumpf, M Valassi, Andrea Verderi, M Videau, H L Candlin, D J Parsons, M I Focardi, E Parrini, G Zachariadou, K Corden, M Georgiopoulos, C H Jaffe, D E Antonelli, A Bencivenni, G Bologna, G Bossi, F Campana, P Capon, G Casper, David William Chiarella, V Felici, G Laurelli, P Mannocchi, G Murtas, F Murtas, G P Passalacqua, L Pepé-Altarelli, M Curtis, L Dorris, S J Halley, A W Knowles, I G Lynch, J G O'Shea, V Raine, C Scarr, J M Smith, K Teixeira-Dias, P Thompson, A S Thomson, E Thomson, F Turnbull, R M Geweniger, C Graefe, G Hanke, P Hansper, G Hepp, V Kluge, E E Putzer, A Schmidt, M Sommer, J Tittel, K Werner, S Wunsch, M Beuselinck, R Binnie, David M Cameron, W Dornan, Peter J Girone, M Goodsir, S M Martin, E B Moutoussi, A Nash, J Sedgbeer, J K Stacey, A M Williams, M D Dissertori, G Girtler, P Kuhn, D Rudolph, G Betteridge, A P Bowdery, C K Colrain, P Crawford, G Finch, A J Foster, F Hughes, G Sloan, Terence Williams, M I Galla, A Giehl, I Greene, A M Hoffmann, C Jakobs, K Kleinknecht, K Quast, G Renk, B Rohne, E Sander, H G Van Gemmeren, P Zeitnitz, C Aubert, Jean-Jacques Benchouk, C Bonissent, A Bujosa, G Calvet, D Carr, J Coyle, P Diaconu, C A Etienne, F Konstantinidis, N P Leroy, O Motsch, F Payre, P Rousseau, D Talby, M Sadouki, A Thulasidas, M Trabelsi, K Aleppo, M Ragusa, F Berlich, R Blum, Walter Büscher, V Dietl, H Dydak, Friedrich Ganis, G Gotzhein, C Kroha, H Lütjens, G Lutz, Gerhard Männer, W Moser, H G Richter, R H Rosado-Schlosser, A Schael, S Settles, Ronald Seywerd, H C J Saint-Denis, R Stenzel, H Wiedenmann, W Wolf, G Boucrot, J Callot, O Chen, S Choi, Y Cordier, A Davier, M Duflot, L Grivaz, J F Heusse, P Höcker, A Jacholkowska, A Jacquet, M Kim, D W Le Diberder, F R Lefrançois, J Lutz, A M Nikolic, I A Schune, M H Simion, S Tournefier, E Veillet, J J Videau, I Zerwas, D Azzurri, P Bagliesi, G Batignani, G Bettarini, S Bozzi, C Calderini, G Carpinelli, M Ciocci, M A Ciulli, V Dell'Orso, R Fantechi, R Ferrante, I Foà, L Forti, F Giassi, A Giorgi, M A Gregorio, A Ligabue, F Lusiani, A Marrocchesi, P S Messineo, A Palla, Fabrizio Sanguinetti, G Sciabà, A Spagnolo, P Steinberger, Jack Tenchini, Roberto Tonelli, G Vannini, C Venturi, A Verdini, P G Blair, G A Bryant, L M Chambers, J T Gao, Y Green, M G Medcalf, T Perrodo, P Strong, J A Von Wimmersperg-Töller, J H Botterill, David R Clifft, R W Edgecock, T R Haywood, S Maley, P Norton, P R Thompson, J C Wright, A E Bloch-Devaux, B Colas, P Emery, S Kozanecki, Witold Lançon, E Lemaire, M C Locci, E Pérez, 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 Litke, A M McNeil, M A Taylor, G Booth, C N Boswell, R Brew, C A J Cartwright, S L Combley, F Kelly, M S Lehto, M H Newton, W M Reeve, J Thompson, L F Böhrer, A Brandt, S Cowan, G D Grupen, Claus Saraiva, P Smolik, L Stephan, F Apollonio, M Bosisio, L Della Marina, R Giannini, G Gobbo, B Musolino, G Rothberg, J E Wasserbaech, S R Armstrong, S R Charles, E Elmer, P Ferguson, D P S Gao, Y S González, S Greening, T C Hayes, O J Hu, H Jin, S McNamara, P A Nachtman, J M Nielsen, J Orejudos, W Pan, Y B Saadi, Y Scott, I J Walsh, J Wu Sau Lan Wu, X Yamartino, J M Zobernig, G
author_facet	Barate, R Buskulic, Damir Décamp, D Ghez, P Goy, C Lees, J P Lucotte, A Minard, M N Nief, J Y Pietrzyk, B Casado, M P Chmeissani, M Comas, P Crespo, J M Delfino, M C Fernández, E Fernández-Bosman, M Garrido, L Juste, A Martínez, M Miquel, R Mir, L M Orteu, S Padilla, C Park, I C Pascual, A Perlas, J A Riu, I Sánchez, F Teubert, F Colaleo, A Creanza, D De Palma, M Gelao, G Iaselli, Giuseppe Maggi, G Maggi, M Marinelli, N 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 Alemany, R Becker, U Bazarko, A O Bright-Thomas, P G Cattaneo, M Cerutti, F Drevermann, H Forty, Roger W Frank, M Hagelberg, R Harvey, J Janot, P Jost, B Kneringer, E Knobloch, J Lehraus, Ivan Lutters, G Mato, P Minten, Adolf G Moneta, L Pacheco, A Pusztaszeri, J F Ranjard, F Rensing, P E Rizzo, G Rolandi, Luigi Schlatter, W D Schmitt, M Schneider, O Tejessy, W Tomalin, I R Wachsmuth, H W Wagner, A Ajaltouni, Ziad J Barrès, A Boyer, C 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 Rossignol, J M Fearnley, Tom Hansen, J B Hansen, J D Hansen, J R Hansen, P H Nilsson, B S Rensch, B Wäänänen, A Daskalakis, G Kyriakis, A Markou, C Simopoulou, Errietta Siotis, I Vayaki, Anna Blondel, A Bonneaud, G R Brient, J C Bourdon, P Rougé, A Rumpf, M Valassi, Andrea Verderi, M Videau, H L Candlin, D J Parsons, M I Focardi, E Parrini, G Zachariadou, K Corden, M Georgiopoulos, C H Jaffe, D E Antonelli, A Bencivenni, G Bologna, G Bossi, F Campana, P Capon, G Casper, David William Chiarella, V Felici, G Laurelli, P Mannocchi, G Murtas, F Murtas, G P Passalacqua, L Pepé-Altarelli, M Curtis, L Dorris, S J Halley, A W Knowles, I G Lynch, J G O'Shea, V Raine, C Scarr, J M Smith, K Teixeira-Dias, P Thompson, A S Thomson, E Thomson, F Turnbull, R M Geweniger, C Graefe, G Hanke, P Hansper, G Hepp, V Kluge, E E Putzer, A Schmidt, M Sommer, J Tittel, K Werner, S Wunsch, M Beuselinck, R Binnie, David M Cameron, W Dornan, Peter J Girone, M Goodsir, S M Martin, E B Moutoussi, A Nash, J Sedgbeer, J K Stacey, A M Williams, M D Dissertori, G Girtler, P Kuhn, D Rudolph, G Betteridge, A P Bowdery, C K Colrain, P Crawford, G Finch, A J Foster, F Hughes, G Sloan, Terence Williams, M I Galla, A Giehl, I Greene, A M Hoffmann, C Jakobs, K Kleinknecht, K Quast, G Renk, B Rohne, E Sander, H G Van Gemmeren, P Zeitnitz, C Aubert, Jean-Jacques Benchouk, C Bonissent, A Bujosa, G Calvet, D Carr, J Coyle, P Diaconu, C A Etienne, F Konstantinidis, N P Leroy, O Motsch, F Payre, P Rousseau, D Talby, M Sadouki, A Thulasidas, M Trabelsi, K Aleppo, M Ragusa, F Berlich, R Blum, Walter Büscher, V Dietl, H Dydak, Friedrich Ganis, G Gotzhein, C Kroha, H Lütjens, G Lutz, Gerhard Männer, W Moser, H G Richter, R H Rosado-Schlosser, A Schael, S Settles, Ronald Seywerd, H C J Saint-Denis, R Stenzel, H Wiedenmann, W Wolf, G Boucrot, J Callot, O Chen, S Choi, Y Cordier, A Davier, M Duflot, L Grivaz, J F Heusse, P Höcker, A Jacholkowska, A Jacquet, M Kim, D W Le Diberder, F R Lefrançois, J Lutz, A M Nikolic, I A Schune, M H Simion, S Tournefier, E Veillet, J J Videau, I Zerwas, D Azzurri, P Bagliesi, G Batignani, G Bettarini, S Bozzi, C Calderini, G Carpinelli, M Ciocci, M A Ciulli, V Dell'Orso, R Fantechi, R Ferrante, I Foà, L Forti, F Giassi, A Giorgi, M A Gregorio, A Ligabue, F Lusiani, A Marrocchesi, P S Messineo, A Palla, Fabrizio Sanguinetti, G Sciabà, A Spagnolo, P Steinberger, Jack Tenchini, Roberto Tonelli, G Vannini, C Venturi, A Verdini, P G Blair, G A Bryant, L M Chambers, J T Gao, Y Green, M G Medcalf, T Perrodo, P Strong, J A Von Wimmersperg-Töller, J H Botterill, David R Clifft, R W Edgecock, T R Haywood, S Maley, P Norton, P R Thompson, J C Wright, A E Bloch-Devaux, B Colas, P Emery, S Kozanecki, Witold Lançon, E Lemaire, M C Locci, E Pérez, 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 Litke, A M McNeil, M A Taylor, G Booth, C N Boswell, R Brew, C A J Cartwright, S L Combley, F Kelly, M S Lehto, M H Newton, W M Reeve, J Thompson, L F Böhrer, A Brandt, S Cowan, G D Grupen, Claus Saraiva, P Smolik, L Stephan, F Apollonio, M Bosisio, L Della Marina, R Giannini, G Gobbo, B Musolino, G Rothberg, J E Wasserbaech, S R Armstrong, S R Charles, E Elmer, P Ferguson, D P S Gao, Y S González, S Greening, T C Hayes, O J Hu, H Jin, S McNamara, P A Nachtman, J M Nielsen, J Orejudos, W Pan, Y B Saadi, Y Scott, I J Walsh, J Wu Sau Lan Wu, X Yamartino, J M Zobernig, G
author_sort	Barate, R
collection	CERN
description	A search for the Bc meson decaying into the channels J/psi pi+ and J/psi l nu (l = e or mu) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and 0.81 background events are expected. The following 90\% confidence level upper limits are derived: Br(Z->Bc X)/Br(Z->q q )Br(Bc->J/psi pi+) < 3.6 10^-5 Br(Z->Bc X)/Br(Z->q q )Br(Bc->J/psi l nu) < 5.2 10^-5 An additional Bc->J/psi(e+e-) mu nu candidate with very low background probability, found in an independent analysis, is also described in detail.
id	cern-322714
institution	Organización Europea para la Investigación Nuclear
language	eng
publishDate	1997
record_format	invenio
spelling	cern-3227142019-09-30T06:29:59Zdoi:10.1016/S0370-2693(97)00461-9http://cds.cern.ch/record/322714engBarate, RBuskulic, DamirDécamp, DGhez, PGoy, CLees, J PLucotte, AMinard, M NNief, J YPietrzyk, BCasado, M PChmeissani, MComas, PCrespo, J MDelfino, M CFernández, EFernández-Bosman, MGarrido, LJuste, AMartínez, MMiquel, RMir, L MOrteu, SPadilla, CPark, I CPascual, APerlas, J ARiu, ISánchez, FTeubert, FColaleo, ACreanza, DDe Palma, MGelao, GIaselli, GiuseppeMaggi, GMaggi, MMarinelli, NNuzzo, SRanieri, ARaso, GRuggieri, FSelvaggi, GSilvestris, LTempesta, PTricomi, AZito, GHuang, XLin, JOuyang, QWang, TXie, YXu, RXue, SZhang, JZhang, LZhao, WAbbaneo, DAlemany, RBecker, UBazarko, A OBright-Thomas, P GCattaneo, MCerutti, FDrevermann, HForty, Roger WFrank, MHagelberg, RHarvey, JJanot, PJost, BKneringer, EKnobloch, JLehraus, IvanLutters, GMato, PMinten, Adolf GMoneta, LPacheco, APusztaszeri, J FRanjard, FRensing, P ERizzo, GRolandi, LuigiSchlatter, W DSchmitt, MSchneider, OTejessy, WTomalin, I RWachsmuth, H WWagner, AAjaltouni, Ziad JBarrès, ABoyer, CFalvard, AFerdi, CGay, PGuicheney, CHenrard, PJousset, JMichel, BMonteil, SMontret, J CPallin, DPerret, PPodlyski, FProriol, JRosnet, PRossignol, J MFearnley, TomHansen, J BHansen, J DHansen, J RHansen, P HNilsson, B SRensch, BWäänänen, ADaskalakis, GKyriakis, AMarkou, CSimopoulou, ErriettaSiotis, IVayaki, AnnaBlondel, ABonneaud, G RBrient, J CBourdon, PRougé, ARumpf, MValassi, AndreaVerderi, MVideau, H LCandlin, D JParsons, M IFocardi, EParrini, GZachariadou, KCorden, MGeorgiopoulos, C HJaffe, D EAntonelli, ABencivenni, GBologna, GBossi, FCampana, PCapon, GCasper, David WilliamChiarella, VFelici, GLaurelli, PMannocchi, GMurtas, FMurtas, G PPassalacqua, LPepé-Altarelli, MCurtis, LDorris, S JHalley, A WKnowles, I GLynch, J GO'Shea, VRaine, CScarr, J MSmith, KTeixeira-Dias, PThompson, A SThomson, EThomson, FTurnbull, R MGeweniger, CGraefe, GHanke, PHansper, GHepp, VKluge, E EPutzer, ASchmidt, MSommer, JTittel, KWerner, SWunsch, MBeuselinck, RBinnie, David MCameron, WDornan, Peter JGirone, MGoodsir, S MMartin, E BMoutoussi, ANash, JSedgbeer, J KStacey, A MWilliams, M DDissertori, GGirtler, PKuhn, DRudolph, GBetteridge, A PBowdery, C KColrain, PCrawford, GFinch, A JFoster, FHughes, GSloan, TerenceWilliams, M IGalla, AGiehl, IGreene, A MHoffmann, CJakobs, KKleinknecht, KQuast, GRenk, BRohne, ESander, H GVan Gemmeren, PZeitnitz, CAubert, Jean-JacquesBenchouk, CBonissent, ABujosa, GCalvet, DCarr, JCoyle, PDiaconu, C AEtienne, FKonstantinidis, N PLeroy, OMotsch, FPayre, PRousseau, DTalby, MSadouki, AThulasidas, MTrabelsi, KAleppo, MRagusa, FBerlich, RBlum, WalterBüscher, VDietl, HDydak, FriedrichGanis, GGotzhein, CKroha, HLütjens, GLutz, GerhardMänner, WMoser, H GRichter, R HRosado-Schlosser, ASchael, SSettles, RonaldSeywerd, H C JSaint-Denis, RStenzel, HWiedenmann, WWolf, GBoucrot, JCallot, OChen, SChoi, YCordier, ADavier, MDuflot, LGrivaz, J FHeusse, PHöcker, AJacholkowska, AJacquet, MKim, D WLe Diberder, F RLefrançois, JLutz, A MNikolic, I ASchune, M HSimion, STournefier, EVeillet, J JVideau, IZerwas, DAzzurri, PBagliesi, GBatignani, GBettarini, SBozzi, CCalderini, GCarpinelli, MCiocci, M ACiulli, VDell'Orso, RFantechi, RFerrante, IFoà, LForti, FGiassi, AGiorgi, M AGregorio, ALigabue, FLusiani, AMarrocchesi, P SMessineo, APalla, FabrizioSanguinetti, GSciabà, ASpagnolo, PSteinberger, JackTenchini, RobertoTonelli, GVannini, CVenturi, AVerdini, P GBlair, G ABryant, L MChambers, J TGao, YGreen, M GMedcalf, TPerrodo, PStrong, J AVon Wimmersperg-Töller, J HBotterill, David RClifft, R WEdgecock, T RHaywood, SMaley, PNorton, P RThompson, J CWright, A EBloch-Devaux, BColas, PEmery, SKozanecki, WitoldLançon, ELemaire, M CLocci, EPérez, PRander, JRenardy, J FRoussarie, ASchuller, J PSchwindling, JTrabelsi, AVallage, BBlack, S NDann, J HJohnson, R PKim, H YLitke, A MMcNeil, M ATaylor, GBooth, C NBoswell, RBrew, C A JCartwright, S LCombley, FKelly, M SLehto, M HNewton, W MReeve, JThompson, L FBöhrer, ABrandt, SCowan, G DGrupen, ClausSaraiva, PSmolik, LStephan, FApollonio, MBosisio, LDella Marina, RGiannini, GGobbo, BMusolino, GRothberg, J EWasserbaech, S RArmstrong, S RCharles, EElmer, PFerguson, D P SGao, Y SGonzález, SGreening, T CHayes, O JHu, HJin, SMcNamara, P ANachtman, J MNielsen, JOrejudos, WPan, Y BSaadi, YScott, I JWalsh, JWu Sau LanWu, XYamartino, J MZobernig, GSearch for the $B_{c}$ meson in hadronic Z decaysParticle Physics - ExperimentA search for the Bc meson decaying into the channels J/psi pi+ and J/psi l nu (l = e or mu) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and 0.81 background events are expected. The following 90\% confidence level upper limits are derived: Br(Z->Bc X)/Br(Z->q q )Br(Bc->J/psi pi+) < 3.6 10^-5 Br(Z->Bc X)/Br(Z->q q )Br(Bc->J/psi l nu) < 5.2 10^-5 An additional Bc->J/psi(e+e-) mu nu candidate with very low background probability, found in an independent analysis, is also described in detail.CERN-PPE-97-026FSU-SCRI-97-79oai:cds.cern.ch:3227141997-03-05
spellingShingle	Particle Physics - Experiment Barate, R Buskulic, Damir Décamp, D Ghez, P Goy, C Lees, J P Lucotte, A Minard, M N Nief, J Y Pietrzyk, B Casado, M P Chmeissani, M Comas, P Crespo, J M Delfino, M C Fernández, E Fernández-Bosman, M Garrido, L Juste, A Martínez, M Miquel, R Mir, L M Orteu, S Padilla, C Park, I C Pascual, A Perlas, J A Riu, I Sánchez, F Teubert, F Colaleo, A Creanza, D De Palma, M Gelao, G Iaselli, Giuseppe Maggi, G Maggi, M Marinelli, N 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 Alemany, R Becker, U Bazarko, A O Bright-Thomas, P G Cattaneo, M Cerutti, F Drevermann, H Forty, Roger W Frank, M Hagelberg, R Harvey, J Janot, P Jost, B Kneringer, E Knobloch, J Lehraus, Ivan Lutters, G Mato, P Minten, Adolf G Moneta, L Pacheco, A Pusztaszeri, J F Ranjard, F Rensing, P E Rizzo, G Rolandi, Luigi Schlatter, W D Schmitt, M Schneider, O Tejessy, W Tomalin, I R Wachsmuth, H W Wagner, A Ajaltouni, Ziad J Barrès, A Boyer, C 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 Rossignol, J M Fearnley, Tom Hansen, J B Hansen, J D Hansen, J R Hansen, P H Nilsson, B S Rensch, B Wäänänen, A Daskalakis, G Kyriakis, A Markou, C Simopoulou, Errietta Siotis, I Vayaki, Anna Blondel, A Bonneaud, G R Brient, J C Bourdon, P Rougé, A Rumpf, M Valassi, Andrea Verderi, M Videau, H L Candlin, D J Parsons, M I Focardi, E Parrini, G Zachariadou, K Corden, M Georgiopoulos, C H Jaffe, D E Antonelli, A Bencivenni, G Bologna, G Bossi, F Campana, P Capon, G Casper, David William Chiarella, V Felici, G Laurelli, P Mannocchi, G Murtas, F Murtas, G P Passalacqua, L Pepé-Altarelli, M Curtis, L Dorris, S J Halley, A W Knowles, I G Lynch, J G O'Shea, V Raine, C Scarr, J M Smith, K Teixeira-Dias, P Thompson, A S Thomson, E Thomson, F Turnbull, R M Geweniger, C Graefe, G Hanke, P Hansper, G Hepp, V Kluge, E E Putzer, A Schmidt, M Sommer, J Tittel, K Werner, S Wunsch, M Beuselinck, R Binnie, David M Cameron, W Dornan, Peter J Girone, M Goodsir, S M Martin, E B Moutoussi, A Nash, J Sedgbeer, J K Stacey, A M Williams, M D Dissertori, G Girtler, P Kuhn, D Rudolph, G Betteridge, A P Bowdery, C K Colrain, P Crawford, G Finch, A J Foster, F Hughes, G Sloan, Terence Williams, M I Galla, A Giehl, I Greene, A M Hoffmann, C Jakobs, K Kleinknecht, K Quast, G Renk, B Rohne, E Sander, H G Van Gemmeren, P Zeitnitz, C Aubert, Jean-Jacques Benchouk, C Bonissent, A Bujosa, G Calvet, D Carr, J Coyle, P Diaconu, C A Etienne, F Konstantinidis, N P Leroy, O Motsch, F Payre, P Rousseau, D Talby, M Sadouki, A Thulasidas, M Trabelsi, K Aleppo, M Ragusa, F Berlich, R Blum, Walter Büscher, V Dietl, H Dydak, Friedrich Ganis, G Gotzhein, C Kroha, H Lütjens, G Lutz, Gerhard Männer, W Moser, H G Richter, R H Rosado-Schlosser, A Schael, S Settles, Ronald Seywerd, H C J Saint-Denis, R Stenzel, H Wiedenmann, W Wolf, G Boucrot, J Callot, O Chen, S Choi, Y Cordier, A Davier, M Duflot, L Grivaz, J F Heusse, P Höcker, A Jacholkowska, A Jacquet, M Kim, D W Le Diberder, F R Lefrançois, J Lutz, A M Nikolic, I A Schune, M H Simion, S Tournefier, E Veillet, J J Videau, I Zerwas, D Azzurri, P Bagliesi, G Batignani, G Bettarini, S Bozzi, C Calderini, G Carpinelli, M Ciocci, M A Ciulli, V Dell'Orso, R Fantechi, R Ferrante, I Foà, L Forti, F Giassi, A Giorgi, M A Gregorio, A Ligabue, F Lusiani, A Marrocchesi, P S Messineo, A Palla, Fabrizio Sanguinetti, G Sciabà, A Spagnolo, P Steinberger, Jack Tenchini, Roberto Tonelli, G Vannini, C Venturi, A Verdini, P G Blair, G A Bryant, L M Chambers, J T Gao, Y Green, M G Medcalf, T Perrodo, P Strong, J A Von Wimmersperg-Töller, J H Botterill, David R Clifft, R W Edgecock, T R Haywood, S Maley, P Norton, P R Thompson, J C Wright, A E Bloch-Devaux, B Colas, P Emery, S Kozanecki, Witold Lançon, E Lemaire, M C Locci, E Pérez, 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 Litke, A M McNeil, M A Taylor, G Booth, C N Boswell, R Brew, C A J Cartwright, S L Combley, F Kelly, M S Lehto, M H Newton, W M Reeve, J Thompson, L F Böhrer, A Brandt, S Cowan, G D Grupen, Claus Saraiva, P Smolik, L Stephan, F Apollonio, M Bosisio, L Della Marina, R Giannini, G Gobbo, B Musolino, G Rothberg, J E Wasserbaech, S R Armstrong, S R Charles, E Elmer, P Ferguson, D P S Gao, Y S González, S Greening, T C Hayes, O J Hu, H Jin, S McNamara, P A Nachtman, J M Nielsen, J Orejudos, W Pan, Y B Saadi, Y Scott, I J Walsh, J Wu Sau Lan Wu, X Yamartino, J M Zobernig, G Search for the $B_{c}$ meson in hadronic Z decays
title	Search for the $B_{c}$ meson in hadronic Z decays
title_full	Search for the $B_{c}$ meson in hadronic Z decays
title_fullStr	Search for the $B_{c}$ meson in hadronic Z decays
title_full_unstemmed	Search for the $B_{c}$ meson in hadronic Z decays
title_short	Search for the $B_{c}$ meson in hadronic Z decays
title_sort	search for the $b_{c}$ meson in hadronic z decays
topic	Particle Physics - Experiment
url	https://dx.doi.org/10.1016/S0370-2693(97)00461-9 http://cds.cern.ch/record/322714
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searchforthebcmesoninhadroniczdecays AT calvetd searchforthebcmesoninhadroniczdecays AT carrj searchforthebcmesoninhadroniczdecays AT coylep searchforthebcmesoninhadroniczdecays AT diaconuca searchforthebcmesoninhadroniczdecays AT etiennef searchforthebcmesoninhadroniczdecays AT konstantinidisnp searchforthebcmesoninhadroniczdecays AT leroyo searchforthebcmesoninhadroniczdecays AT motschf searchforthebcmesoninhadroniczdecays AT payrep searchforthebcmesoninhadroniczdecays AT rousseaud searchforthebcmesoninhadroniczdecays AT talbym searchforthebcmesoninhadroniczdecays AT sadoukia searchforthebcmesoninhadroniczdecays AT thulasidasm searchforthebcmesoninhadroniczdecays AT trabelsik searchforthebcmesoninhadroniczdecays AT aleppom searchforthebcmesoninhadroniczdecays AT ragusaf searchforthebcmesoninhadroniczdecays AT berlichr searchforthebcmesoninhadroniczdecays AT blumwalter searchforthebcmesoninhadroniczdecays AT buscherv searchforthebcmesoninhadroniczdecays AT dietlh searchforthebcmesoninhadroniczdecays AT dydakfriedrich searchforthebcmesoninhadroniczdecays AT ganisg searchforthebcmesoninhadroniczdecays AT gotzheinc searchforthebcmesoninhadroniczdecays AT krohah searchforthebcmesoninhadroniczdecays AT lutjensg searchforthebcmesoninhadroniczdecays AT lutzgerhard searchforthebcmesoninhadroniczdecays AT mannerw searchforthebcmesoninhadroniczdecays AT moserhg searchforthebcmesoninhadroniczdecays AT richterrh searchforthebcmesoninhadroniczdecays AT rosadoschlossera searchforthebcmesoninhadroniczdecays AT schaels searchforthebcmesoninhadroniczdecays AT settlesronald searchforthebcmesoninhadroniczdecays AT seywerdhcj searchforthebcmesoninhadroniczdecays AT saintdenisr searchforthebcmesoninhadroniczdecays AT stenzelh searchforthebcmesoninhadroniczdecays AT wiedenmannw searchforthebcmesoninhadroniczdecays AT wolfg searchforthebcmesoninhadroniczdecays AT boucrotj searchforthebcmesoninhadroniczdecays AT calloto searchforthebcmesoninhadroniczdecays AT chens searchforthebcmesoninhadroniczdecays AT choiy searchforthebcmesoninhadroniczdecays AT cordiera searchforthebcmesoninhadroniczdecays AT davierm searchforthebcmesoninhadroniczdecays AT duflotl searchforthebcmesoninhadroniczdecays AT grivazjf searchforthebcmesoninhadroniczdecays AT heussep searchforthebcmesoninhadroniczdecays AT hockera searchforthebcmesoninhadroniczdecays AT jacholkowskaa searchforthebcmesoninhadroniczdecays AT jacquetm searchforthebcmesoninhadroniczdecays AT kimdw searchforthebcmesoninhadroniczdecays AT lediberderfr searchforthebcmesoninhadroniczdecays AT lefrancoisj searchforthebcmesoninhadroniczdecays AT lutzam searchforthebcmesoninhadroniczdecays AT nikolicia searchforthebcmesoninhadroniczdecays AT schunemh searchforthebcmesoninhadroniczdecays AT simions searchforthebcmesoninhadroniczdecays AT tournefiere searchforthebcmesoninhadroniczdecays AT veilletjj searchforthebcmesoninhadroniczdecays AT videaui searchforthebcmesoninhadroniczdecays AT zerwasd searchforthebcmesoninhadroniczdecays AT azzurrip searchforthebcmesoninhadroniczdecays AT bagliesig searchforthebcmesoninhadroniczdecays AT batignanig searchforthebcmesoninhadroniczdecays AT bettarinis searchforthebcmesoninhadroniczdecays AT bozzic searchforthebcmesoninhadroniczdecays AT calderinig searchforthebcmesoninhadroniczdecays AT carpinellim searchforthebcmesoninhadroniczdecays AT cioccima searchforthebcmesoninhadroniczdecays AT ciulliv searchforthebcmesoninhadroniczdecays AT dellorsor searchforthebcmesoninhadroniczdecays AT fantechir searchforthebcmesoninhadroniczdecays AT ferrantei searchforthebcmesoninhadroniczdecays AT foal searchforthebcmesoninhadroniczdecays AT fortif searchforthebcmesoninhadroniczdecays AT giassia searchforthebcmesoninhadroniczdecays AT giorgima searchforthebcmesoninhadroniczdecays AT gregorioa searchforthebcmesoninhadroniczdecays AT ligabuef searchforthebcmesoninhadroniczdecays AT lusiania searchforthebcmesoninhadroniczdecays AT marrocchesips searchforthebcmesoninhadroniczdecays AT messineoa searchforthebcmesoninhadroniczdecays AT pallafabrizio searchforthebcmesoninhadroniczdecays AT sanguinettig searchforthebcmesoninhadroniczdecays AT sciabaa searchforthebcmesoninhadroniczdecays AT spagnolop searchforthebcmesoninhadroniczdecays AT steinbergerjack searchforthebcmesoninhadroniczdecays AT tenchiniroberto searchforthebcmesoninhadroniczdecays AT tonellig searchforthebcmesoninhadroniczdecays AT vanninic searchforthebcmesoninhadroniczdecays AT venturia searchforthebcmesoninhadroniczdecays AT verdinipg searchforthebcmesoninhadroniczdecays AT blairga searchforthebcmesoninhadroniczdecays AT bryantlm searchforthebcmesoninhadroniczdecays AT chambersjt searchforthebcmesoninhadroniczdecays AT gaoy searchforthebcmesoninhadroniczdecays AT greenmg searchforthebcmesoninhadroniczdecays AT medcalft searchforthebcmesoninhadroniczdecays AT perrodop searchforthebcmesoninhadroniczdecays AT strongja searchforthebcmesoninhadroniczdecays AT vonwimmerspergtollerjh searchforthebcmesoninhadroniczdecays AT botterilldavidr searchforthebcmesoninhadroniczdecays AT clifftrw searchforthebcmesoninhadroniczdecays AT edgecocktr searchforthebcmesoninhadroniczdecays AT haywoods searchforthebcmesoninhadroniczdecays AT maleyp searchforthebcmesoninhadroniczdecays AT nortonpr searchforthebcmesoninhadroniczdecays AT thompsonjc searchforthebcmesoninhadroniczdecays AT wrightae searchforthebcmesoninhadroniczdecays AT blochdevauxb searchforthebcmesoninhadroniczdecays AT colasp searchforthebcmesoninhadroniczdecays AT emerys searchforthebcmesoninhadroniczdecays AT kozaneckiwitold searchforthebcmesoninhadroniczdecays AT lancone searchforthebcmesoninhadroniczdecays AT lemairemc searchforthebcmesoninhadroniczdecays AT loccie searchforthebcmesoninhadroniczdecays AT perezp searchforthebcmesoninhadroniczdecays AT randerj searchforthebcmesoninhadroniczdecays AT renardyjf searchforthebcmesoninhadroniczdecays AT roussariea searchforthebcmesoninhadroniczdecays AT schullerjp searchforthebcmesoninhadroniczdecays AT schwindlingj searchforthebcmesoninhadroniczdecays AT trabelsia searchforthebcmesoninhadroniczdecays AT vallageb searchforthebcmesoninhadroniczdecays AT blacksn searchforthebcmesoninhadroniczdecays AT dannjh searchforthebcmesoninhadroniczdecays AT johnsonrp searchforthebcmesoninhadroniczdecays AT kimhy searchforthebcmesoninhadroniczdecays AT litkeam searchforthebcmesoninhadroniczdecays AT mcneilma searchforthebcmesoninhadroniczdecays AT taylorg searchforthebcmesoninhadroniczdecays AT boothcn searchforthebcmesoninhadroniczdecays AT boswellr searchforthebcmesoninhadroniczdecays AT brewcaj searchforthebcmesoninhadroniczdecays AT cartwrightsl searchforthebcmesoninhadroniczdecays AT combleyf searchforthebcmesoninhadroniczdecays AT kellyms searchforthebcmesoninhadroniczdecays AT lehtomh searchforthebcmesoninhadroniczdecays AT newtonwm searchforthebcmesoninhadroniczdecays AT reevej searchforthebcmesoninhadroniczdecays AT thompsonlf searchforthebcmesoninhadroniczdecays AT bohrera searchforthebcmesoninhadroniczdecays AT brandts searchforthebcmesoninhadroniczdecays AT cowangd searchforthebcmesoninhadroniczdecays AT grupenclaus searchforthebcmesoninhadroniczdecays AT saraivap searchforthebcmesoninhadroniczdecays AT smolikl searchforthebcmesoninhadroniczdecays AT stephanf searchforthebcmesoninhadroniczdecays AT apolloniom searchforthebcmesoninhadroniczdecays AT bosisiol searchforthebcmesoninhadroniczdecays AT dellamarinar searchforthebcmesoninhadroniczdecays AT gianninig searchforthebcmesoninhadroniczdecays AT gobbob searchforthebcmesoninhadroniczdecays AT musolinog searchforthebcmesoninhadroniczdecays AT rothbergje searchforthebcmesoninhadroniczdecays AT wasserbaechsr searchforthebcmesoninhadroniczdecays AT armstrongsr searchforthebcmesoninhadroniczdecays AT charlese searchforthebcmesoninhadroniczdecays AT elmerp searchforthebcmesoninhadroniczdecays AT fergusondps searchforthebcmesoninhadroniczdecays AT gaoys searchforthebcmesoninhadroniczdecays AT gonzalezs searchforthebcmesoninhadroniczdecays AT greeningtc searchforthebcmesoninhadroniczdecays AT hayesoj searchforthebcmesoninhadroniczdecays AT huh searchforthebcmesoninhadroniczdecays AT jins searchforthebcmesoninhadroniczdecays AT mcnamarapa searchforthebcmesoninhadroniczdecays AT nachtmanjm searchforthebcmesoninhadroniczdecays AT nielsenj searchforthebcmesoninhadroniczdecays AT orejudosw searchforthebcmesoninhadroniczdecays AT panyb searchforthebcmesoninhadroniczdecays AT saadiy searchforthebcmesoninhadroniczdecays AT scottij searchforthebcmesoninhadroniczdecays AT walshj searchforthebcmesoninhadroniczdecays AT wusaulan searchforthebcmesoninhadroniczdecays AT wux searchforthebcmesoninhadroniczdecays AT yamartinojm searchforthebcmesoninhadroniczdecays AT zobernigg searchforthebcmesoninhadroniczdecays

Search for the $B_{c}$ meson in hadronic Z decays

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