Strange b baryon production and lifetime in Z decays

D. Buskulic; I. de Bonis; D. Decamp; P. Ghez; C. Goy; J. P. Lees; A. Lucotte; M. N. Minard; J. Y. Nief; P. Odier; B. Pietrzyk; M. P. Casado; M. Chmeissani; J. M. Crespo; M. Delfino; I. Efthymiopoulos; E. Fernandez; M. Fernandez-Bosman; LI Garrido; A. Juste; M. Martinez; S. Orteu; C. Padilla; I. C. Park; A. Pascual; J. A. Perlas; I. Riu; F. Sanchez; F. Teubert; A. Colaleo; D. Creanza; M. de Palma; G. Gelao; M. Girone; G. Iaselli; G. Maggi; M. Maggi; N. Marinelli; S. Nuzzo; A. Ranieri; G. Raso; 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; R. Alemany; A. O. Bazarko; G. Bonvicini; M. Cattaneo; P. Comas; P. Coyle; H. Drevermann; R. W. Forty; M. Frank; R. Hagelberg; J. Harvey; P. Janot; B. Jost; E. Kneringer; J. Knobloch; I. Lehraus; G. Lutters; E. B. Martin; P. Mato; A. Minten; R. Miquel; L. M. Mir; L. Moneta; T. Oest; A. Pacheco; J. F. Pusztaszeri; F. Ranjard; P. Rensing; L. Rolandi; D. Schlatter; M. Schmelling; M. Schmitt; O. Schneider; W. Tejessy; I. R. Tomalin; A. Venturi; H. Wachsmuth; A. Wagner; Z. Ajaltouni; A. Barrès; 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; P. Rosnet; J. M. Rossignol; T. Fearnley; J. B. Hansen; J. D. Hansen; J. R. Hansen; P. H. Hansen; B. S. Nilsson; B. Rensch; A. Wäänänen; A. Kyriakis; C. Markou; E. Simopoulou; I. Siotis; A. Vayaki; K. Zachariadou; A. Blondel; G. Bonneaud; J. C. Brient; P. Bourdon; A. Rougé; M. Rumpf; A. Valassi; M. Verderi; H. Videau; D. J. Candlin; M. I. Parsons; E. Focardi; G. Parrini; M. Corden; C. Georgiopoulos; D. E. Jaffe; A. Antonelli; G. Bencivenni; G. Bologna; F. Bossi; P. Carnpana; G. Capon; D. Casper; V. Chiarella; G. Felici; P. Laurelli; G. Mannocchi; F. Murtas; G. P. Murtas; L. Passalacqua; M. Pepe-Altarelli; L. Curtis; S. J. Dorris; A. W. Halley; I. G. Knowles; J. G. Lynch; V. O'Shea; C. Raine; P. Reeves; J. M. Scarr; K. Smith; P. Teixeira-Dias; A. S. Thompson; F. Thomson; S. Thorn; R. M. Turnbull; U. Becker; C. Geweniger; G. Graefe; P. Hanke; G. Hansper; V. Hepp; E. E. Kluge; A. Putzer; M. Schmidt; J. Sommer; H. Stenzel; K. Tittel; S. Werner; M. Wunsch; D. Abbaneo; R. Beuselinck; D. M. Binnie; W. Cameron; P. J. Dornan; A. Moutoussi; J. Nash; J. K. Sedgbeer; A. M. Stacey; M. D. Williams; G. Dissertori; P. Girtler; D. Kuhn; G. Rudolph; A. P. Betteridge; C. K. Bowdery; P. Colrain; G. Crawford; A. J. Finch; F. Foster; G. Hughes; T. Sloan; M. I. Williams; A. Galla; I. Giehl; A. M. Greene; K. Kleinknecht; G. Quast; B. Renk; E. Rohne; H. G. Sander; 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; N. Konstantinidis; P. Payre; D. Rousseau; M. Talby; A. Sadouki; M. Thulasidas; K. Trabelsi; M. Aleppo; F. Ragusa; I. Abt; R. Assmann; C. Bauer; W. Blum; H. Dietl; F. Dydak; G. Ganis; C. Gotzhein; K. Jakobs; H. Kroha; G. Lütjens; G. Lutz; W. Manner; H. G. Moser; R. Richter; A. Rosado-Schlosser; S. Schael; R. Settles; H. Seywerd; R. S. Denis; W. Wiedenmann; G. Wolf; J. Boucrot; O. Callot; Y. Choi; A. Cordier; M. Davier; L. Duflot; J. F. Grivaz; P. Heusse; A. Höcker; A. Jacholkowska; M. Jacquet; D. W. Kim; F. Le Diberder; J. Lefrançois; A. M. Lutz; I. Nikolic; H. J. Park; M. H. Schune; S. Simion; J. J. Veillet; I. Videau; D. Zerwas; P. Azzurri; G. Bagliesi; G. Batignani; S. Bettarini; C. Bozzi; G. Calderini; M. Carpinelli; M. A. Ciocci; V. Ciulli; R. Dell'Or so; R. Fantechi; I. Ferrante; L. Foà; F. Forti; A. Giassi; M. A. Giorgi; A. Gregorio; F. Ligabue; A. Lusiani; P. S. Marrocchesi; A. Messineo; F. Palla; G. Rizzo; G. Sanguinetti; A. Sciabà; P. Spagnolo; J. Steinberger; R. Tenchini; G. Tonelli; C. Vannini; P. G. Verdini; J. Walsh; G. A. Blair; L. M. Bryant; F. Cerutti; J. T. Chambers; Y. Gao; M. G. Green; T. Medealf; P. Perrodo; J. A. Strong; J. H. von Wimmersperg-Toeller; D. R. Botterill; R. W. Clifft; T. R. Edgecock; S. Haywood; P. Maley; PR Norton; J. C. Thompson; A. E. Wright; B. Bloch-Devaux; P. Colas; S. Emery; W. Kozanecki; E. Lançon; M. C. Lemaire; E. Locci; B. Marx; P. Perez; J. Rander; J. F. Renardy; A. Roussarie; J. P. Schuller; J. Schwindling; A. Trabelsi; B. Vallage; S. N. Black; J. H. Dann; R. P. Johnson; H. Y. Kim; A. M. Litke; M. A. McNeil; G. Taylor; C. N. Booth; R. Boswell; C. A.J. Brew; S. Cartwright; F. Combley; A. Koksal; M. Letho; W. M. Newton; J. Reeve; L. F. Thompson; A. Böhrer; S. Brandt; V. Büscher; G. Cowan; C. Grupen; J. Minguet-Rodriguez; F. Rivera; P. Saraiva; L. Smolik; F. Stephan; M. Apollonio; L. Bosisio; R. Delia Marina; G. Giannini; B. Gobbo; G. Musolino; J. Rothberg; S. Wasserbaech; S. R. Armstrong; P. Elmer; Z. Feng; D. P.S. Ferguson; Y. S. Gao; S. González; J. Grahl; T. C. Greening; O. J. Hayes; H. Hu; P. A. McNamara; J. M. Nachtman; W. Orejudos; Y. B. Pan; Y. Saadi; I. J. Scott; A. M. Walsh; S. L. Wu; X. Wu; J. M. Yamartino; M. Zheng; G. Zobernig

doi:10.1016/0370-2693(96)00925-2

Strange b baryon production and lifetime in Z decays

D. Buskulic, I. de Bonis, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, M. N. Minard, J. Y. Nief, P. Odier, B. Pietrzyk, M. P. Casado, M. Chmeissani, J. M. Crespo, M. Delfino, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosman, LI Garrido, A. JusteM. Martinez, S. Orteu, C. Padilla, I. C. Park, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. de Palma, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, 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, R. Alemany, A. O. Bazarko, G. Bonvicini, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, G. Lutters, E. B. Martin, P. Mato, A. Minten, R. Miquel, L. M. Mir, L. Moneta, T. Oest, A. Pacheco, J. F. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, M. Schmitt, O. Schneider, W. Tejessy, I. R. Tomalin, A. Venturi, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrès, 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, P. Rosnet, J. M. Rossignol, T. Fearnley, J. B. Hansen, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, B. Rensch, A. Wäänänen, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. C. Brient, P. Bourdon, A. Rougé, M. Rumpf, A. Valassi, M. Verderi, H. Videau, D. J. Candlin, M. I. Parsons, E. Focardi, G. Parrini, M. Corden, C. Georgiopoulos, D. E. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Carnpana, G. Capon, D. Casper, V. Chiarella, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, L. Curtis, S. J. Dorris, A. W. Halley, I. G. Knowles, J. G. Lynch, V. O'Shea, C. Raine, P. Reeves, J. M. Scarr, K. Smith, P. Teixeira-Dias, A. S. Thompson, F. Thomson, S. Thorn, R. M. Turnbull, U. Becker, C. Geweniger, G. Graefe, P. Hanke, G. Hansper, V. Hepp, E. E. Kluge, A. Putzer, M. Schmidt, J. Sommer, H. Stenzel, K. Tittel, S. Werner, M. Wunsch, D. Abbaneo, R. Beuselinck, D. M. Binnie, W. Cameron, P. J. Dornan, A. Moutoussi, J. Nash, J. K. Sedgbeer, A. M. Stacey, M. D. Williams, G. Dissertori, P. Girtler, D. Kuhn, G. Rudolph, A. P. Betteridge, C. K. Bowdery, P. Colrain, G. Crawford, A. J. Finch, F. Foster, G. Hughes, T. Sloan, M. I. Williams, A. Galla, I. Giehl, A. M. Greene, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. G. Sander, 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, N. Konstantinidis, P. Payre, D. Rousseau, M. Talby, A. Sadouki, M. Thulasidas, K. Trabelsi, M. Aleppo, F. Ragusa, I. Abt, R. Assmann, C. Bauer, W. Blum, H. Dietl, F. Dydak, G. Ganis, C. Gotzhein, K. Jakobs, H. Kroha, G. Lütjens, G. Lutz, W. Manner, H. G. Moser, R. Richter, A. Rosado-Schlosser, S. Schael, R. Settles, H. Seywerd, R. S. Denis, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, Y. Choi, A. Cordier, M. Davier, L. Duflot, J. F. Grivaz, P. Heusse, A. Höcker, A. Jacholkowska, M. Jacquet, D. W. Kim, F. Le Diberder, J. Lefrançois, A. M. Lutz, I. Nikolic, H. J. Park, M. H. Schune, S. Simion, J. J. Veillet, I. Videau, D. Zerwas, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, C. Bozzi, G. Calderini, M. Carpinelli, M. A. Ciocci, V. Ciulli, R. Dell'Or so, R. Fantechi, I. Ferrante, L. Foà, F. Forti, A. Giassi, M. A. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P. S. Marrocchesi, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, A. Sciabà, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, C. Vannini, P. G. Verdini, J. Walsh, G. A. Blair, L. M. Bryant, F. Cerutti, J. T. Chambers, Y. Gao, M. G. Green, T. Medealf, P. Perrodo, J. A. Strong, J. H. von Wimmersperg-Toeller, D. R. Botterill, R. W. Clifft, T. R. Edgecock, S. Haywood, P. Maley, PR Norton, J. C. Thompson, A. E. Wright, B. Bloch-Devaux, P. Colas, S. Emery, W. Kozanecki, E. Lançon, M. C. Lemaire, E. Locci, B. Marx, P. Perez, J. Rander, J. F. Renardy, A. Roussarie, J. P. Schuller, J. Schwindling, A. Trabelsi, B. Vallage, S. N. Black, J. H. Dann, R. P. Johnson, H. Y. Kim, A. M. Litke, M. A. McNeil, G. Taylor, C. N. Booth, R. Boswell, C. A.J. Brew, S. Cartwright, F. Combley, A. Koksal, M. Letho, W. M. Newton, J. Reeve, L. F. Thompson, A. Böhrer, S. Brandt, V. Büscher, G. Cowan, C. Grupen, J. Minguet-Rodriguez, F. Rivera, P. Saraiva, L. Smolik, F. Stephan, M. Apollonio, L. Bosisio, R. Delia Marina, G. Giannini, B. Gobbo, G. Musolino, J. Rothberg, S. Wasserbaech, S. R. Armstrong, P. Elmer, Z. Feng, D. P.S. Ferguson, Y. S. Gao, S. González, J. Grahl, T. C. Greening, O. J. Hayes, H. Hu, P. A. McNamara, J. M. Nachtman, W. Orejudos, Y. B. Pan, Y. Saadi, I. J. Scott, A. M. Walsh, S. L. Wu, X. Wu, J. M. Yamartino, M. Zheng, G. Zobernig

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

In a data sample of approximately four million hadronic Z decays recorded with the ALEPH detector from 1990 to 1995, a search for the strange b baryon Ξ_b is performed with a study of Ξ-lepton correlations. Forty-four events with same sign Ξ^-ℓ^- combinations are found whereas 8.4 are expected based on the rate of opposite sign Ξ^-ℓ⁺ combinations. This significant excess is interpreted as evidence for Ξ_b semileptonic decays. The measured product branching ratio is Br(b → Ξ_b) × Br(Ξ_b → Χ_cΧℓ^-ν_l) × Br(XΧ_c → Ξ^-Χ′) = (5.4±1.1(stat)±0.8(syst)) × 10^-4 per lepton species, averaged over electrons and muons, with Χ_c a charmed baryon. The Ξ_b lifetime is measured to be τ_Ξb = 1.35_-0.28^+0.37 (stat) _0.17^+0.15 (syst) ps.

Original language	English (US)
Pages (from-to)	449-460
Number of pages	12
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	384
Issue number	1-4
DOIs	https://doi.org/10.1016/0370-2693(96)00925-2
State	Published - Sep 19 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/0370-2693(96)00925-2

Cite this

Buskulic, D., de Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Lucotte, A., Minard, M. N., Nief, J. Y., Odier, P., Pietrzyk, B., Casado, M. P., Chmeissani, M., Crespo, J. M., Delfino, M., Efthymiopoulos, I., Fernandez, E., Fernandez-Bosman, M., Garrido, LI., ... Zobernig, G. (1996). Strange b baryon production and lifetime in Z decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 384(1-4), 449-460. https://doi.org/10.1016/0370-2693(96)00925-2

@article{f5ceba9fb6ec406089d41ec139b8562d,

title = "Strange b baryon production and lifetime in Z decays",

abstract = "In a data sample of approximately four million hadronic Z decays recorded with the ALEPH detector from 1990 to 1995, a search for the strange b baryon Ξb is performed with a study of Ξ-lepton correlations. Forty-four events with same sign Ξ-ℓ- combinations are found whereas 8.4 are expected based on the rate of opposite sign Ξ-ℓ+ combinations. This significant excess is interpreted as evidence for Ξb semileptonic decays. The measured product branching ratio is Br(b → Ξb) × Br(Ξb → ΧcΧℓ-νl) × Br(XΧc → Ξ-Χ′) = (5.4±1.1(stat)±0.8(syst)) × 10-4 per lepton species, averaged over electrons and muons, with Χc a charmed baryon. The Ξb lifetime is measured to be τΞb = 1.35-0.28+0.37 (stat) 0.17+0.15 (syst) ps.",

author = "D. Buskulic and {de Bonis}, I. and D. Decamp and P. Ghez and C. Goy and Lees, {J. P.} and A. Lucotte and Minard, {M. N.} and Nief, {J. Y.} and P. Odier and B. Pietrzyk and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and M. Delfino and I. Efthymiopoulos and E. Fernandez and M. Fernandez-Bosman and LI Garrido and A. Juste and M. Martinez and S. Orteu and C. Padilla and Park, {I. C.} and A. Pascual and Perlas, {J. A.} and I. Riu and F. Sanchez and F. Teubert and A. Colaleo and D. Creanza and {de Palma}, M. and G. Gelao and M. Girone and G. Iaselli and G. Maggi and M. Maggi and N. Marinelli and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and Y. Xie and R. Xu and S. Xue and J. Zhang and L. Zhang and W. Zhao and R. Alemany and Bazarko, {A. O.} and G. Bonvicini and M. Cattaneo and P. Comas and P. Coyle and H. Drevermann and Forty, {R. W.} and M. Frank and R. Hagelberg and J. Harvey and P. Janot and B. Jost and E. Kneringer and J. Knobloch and I. Lehraus and G. Lutters and Martin, {E. B.} and P. Mato and A. Minten and R. Miquel and Mir, {L. M.} and L. Moneta and T. Oest and A. Pacheco and Pusztaszeri, {J. F.} and F. Ranjard and P. Rensing and L. Rolandi and D. Schlatter and M. Schmelling and M. Schmitt and O. Schneider and W. Tejessy and Tomalin, {I. R.} and A. Venturi and H. Wachsmuth and A. Wagner and Z. Ajaltouni and A. Barr{\`e}s and C. Boyer and A. Falvard and P. Gay and C. Guicheney and P. Henrard and J. Jousset and B. Michel and S. Monteil and Montret, {J. C.} and D. Pallin and P. Perret and F. Podlyski and J. Proriol and P. Rosnet and Rossignol, {J. M.} and T. Fearnley and Hansen, {J. B.} and Hansen, {J. D.} and Hansen, {J. R.} and Hansen, {P. H.} and Nilsson, {B. S.} and B. Rensch and A. W{\"a}{\"a}n{\"a}nen and A. Kyriakis and C. Markou and E. Simopoulou and I. Siotis and A. Vayaki and K. Zachariadou and A. Blondel and G. Bonneaud and Brient, {J. C.} and P. Bourdon and A. Roug{\'e} and M. Rumpf and A. Valassi and M. Verderi and H. Videau and Candlin, {D. J.} and Parsons, {M. I.} and E. Focardi and G. Parrini and M. Corden and C. Georgiopoulos and Jaffe, {D. E.} and A. Antonelli and G. Bencivenni and G. Bologna and F. Bossi and P. Carnpana and G. Capon and D. Casper and V. Chiarella and G. Felici and P. Laurelli and G. Mannocchi and F. Murtas and Murtas, {G. P.} and L. Passalacqua and M. Pepe-Altarelli and L. Curtis and Dorris, {S. J.} and Halley, {A. W.} and Knowles, {I. G.} and Lynch, {J. G.} and V. O'Shea and C. Raine and P. Reeves and Scarr, {J. M.} and K. Smith and P. Teixeira-Dias and Thompson, {A. S.} and F. Thomson and S. Thorn and Turnbull, {R. M.} and U. Becker and C. Geweniger and G. Graefe and P. Hanke and G. Hansper and V. Hepp and Kluge, {E. E.} and A. Putzer and M. Schmidt and J. Sommer and H. Stenzel and K. Tittel and S. Werner and M. Wunsch and D. Abbaneo and R. Beuselinck and Binnie, {D. M.} and W. Cameron and Dornan, {P. J.} and A. Moutoussi and J. Nash and Sedgbeer, {J. K.} and Stacey, {A. M.} and Williams, {M. D.} and G. Dissertori and P. Girtler and D. Kuhn and G. Rudolph and Betteridge, {A. P.} and Bowdery, {C. K.} and P. Colrain and G. Crawford and Finch, {A. J.} and F. Foster and G. Hughes and T. Sloan and Williams, {M. I.} and A. Galla and I. Giehl and Greene, {A. M.} and K. Kleinknecht and G. Quast and B. Renk and E. Rohne and Sander, {H. G.} and {van Gemmeren}, P. and C. Zeitnitz and Aubert, {J. J.} and Bencheikh, {A. M.} and C. Benchouk and A. Bonissent and G. Bujosa and D. Calvet and J. Carr and C. Diaconu and F. Etienne and N. Konstantinidis and P. Payre and D. Rousseau and M. Talby and A. Sadouki and M. Thulasidas and K. Trabelsi and M. Aleppo and F. Ragusa and I. Abt and R. Assmann and C. Bauer and W. Blum and H. Dietl and F. Dydak and G. Ganis and C. Gotzhein and K. Jakobs and H. Kroha and G. L{\"u}tjens and G. Lutz and W. Manner and Moser, {H. G.} and R. Richter and A. Rosado-Schlosser and S. Schael and R. Settles and H. Seywerd and Denis, {R. S.} and W. Wiedenmann and G. Wolf and J. Boucrot and O. Callot and Y. Choi and A. Cordier and M. Davier and L. Duflot and Grivaz, {J. F.} and P. Heusse and A. H{\"o}cker and A. Jacholkowska and M. Jacquet and Kim, {D. W.} and {Le Diberder}, F. and J. Lefran{\c c}ois and Lutz, {A. M.} and I. Nikolic and Park, {H. J.} and Schune, {M. H.} and S. Simion and Veillet, {J. J.} and I. Videau and D. Zerwas and P. Azzurri and G. Bagliesi and G. Batignani and S. Bettarini and C. Bozzi and G. Calderini and M. Carpinelli and Ciocci, {M. A.} and V. Ciulli and {Dell'Or so}, R. and R. Fantechi and I. Ferrante and L. Fo{\`a} and F. Forti and A. Giassi and Giorgi, {M. A.} and A. Gregorio and F. Ligabue and A. Lusiani and Marrocchesi, {P. S.} and A. Messineo and F. Palla and G. Rizzo and G. Sanguinetti and A. Sciab{\`a} and P. Spagnolo and J. Steinberger and R. Tenchini and G. Tonelli and C. Vannini and Verdini, {P. G.} and J. Walsh and Blair, {G. A.} and Bryant, {L. M.} and F. Cerutti and Chambers, {J. T.} and Y. Gao and Green, {M. G.} and T. Medealf and P. Perrodo and Strong, {J. A.} and {von Wimmersperg-Toeller}, {J. H.} and Botterill, {D. R.} and Clifft, {R. W.} and Edgecock, {T. R.} and S. Haywood and P. Maley and PR Norton and Thompson, {J. C.} and Wright, {A. E.} and B. Bloch-Devaux and P. Colas and S. Emery and W. Kozanecki and E. Lan{\c c}on and Lemaire, {M. C.} and E. Locci and B. Marx and P. Perez and J. Rander and Renardy, {J. F.} and A. Roussarie and Schuller, {J. P.} and J. Schwindling and A. Trabelsi and B. Vallage and Black, {S. N.} and Dann, {J. H.} and Johnson, {R. P.} and Kim, {H. Y.} and Litke, {A. M.} and McNeil, {M. A.} and G. Taylor and Booth, {C. N.} and R. Boswell and Brew, {C. A.J.} and S. Cartwright and F. Combley and A. Koksal and M. Letho and Newton, {W. M.} and J. Reeve and Thompson, {L. F.} and A. B{\"o}hrer and S. Brandt and V. B{\"u}scher and G. Cowan and C. Grupen and J. Minguet-Rodriguez and F. Rivera and P. Saraiva and L. Smolik and F. Stephan and M. Apollonio and L. Bosisio and {Delia Marina}, R. and G. Giannini and B. Gobbo and G. Musolino and J. Rothberg and S. Wasserbaech and Armstrong, {S. R.} and P. Elmer and Z. Feng and Ferguson, {D. P.S.} and Gao, {Y. S.} and S. Gonz{\'a}lez and J. Grahl and Greening, {T. C.} and Hayes, {O. J.} and H. Hu and McNamara, {P. A.} and Nachtman, {J. M.} and W. Orejudos and Pan, {Y. B.} and Y. Saadi and Scott, {I. J.} and Walsh, {A. M.} and Wu, {S. L.} and X. Wu and Yamartino, {J. M.} and M. Zheng and G. Zobernig",

note = "Funding Information: 1 Now at CERN, 1211 Geneva 23, Switzerland. 2 Supported by Direccidn General de Investigaci6n Cientilica y Tknica, Spain. 3 Now at Dipartimento di Fisica, Universitl di Lecce, 73100 Lecce, Italy. 4 Also Istituto di Fisica Generale, Universitl di Torino, Torino, Italy. 5 Also Istituto di Cosmo-Geofisica de1 C.N.R., Torino, Italy. 6 Supported by the Commission of the European Communities, contract ERBCHBICT941234. 7 Supported by CICYT, Spain. 8 Supported by the National Science Foundation of China. 9 Supported by the Danish Natural Science Research Council. Funding Information: nologie, Germany. l7 Supported by the Direction des Sciences de la Ma&e, C.E.A. I* Supported by Fends zur F6rdemng der wissenschaftlichen Forschung, Austria. lg Permanent address: Kangnung National University, Kangnung, Korea. 2oN ow at DESY, Hamburg, Germany. {\textquoteleft}I Also at CERN, 1211 Geneva 23, Switzerland. ** Supported by the US Departmento f Energy, grant DE-FG03-92ER40689. 23N ow at Wayne State University, Detroit, MI 48202, USA. 24N ow at Max-Plank-In&tit ftir Kernphysik, Heidelberg, Germany. 25A lso at Istituto di Matematica e Fisica, Universiti di Sassari, Sassari, Italy. 26P ermanent address: Sung Kyun Kwon University, Suwon, Korea. 27N ow at The Johns Hopkins University, Baltimore, MD 21218, USA. 28N ow at Harvard University, Cambridge, MA 02138, USA. 2gN ow at Rutgers University, Piscataway, NJ 08855-0849, USA. 3oT hroughout this paper, E:b is used as a generic name for ei and EL, 8, for e: and a$, B for B+, B” and B, mesons, and D for D+, Do and D, mesons. Charge conjugate modes are implied everywhere. Funding Information: lo Supportedb y the UK Particle Physics and Astronomy Research Council. *{\textquoteright} Supportedb y the US Departmento f Energy, grant DE-FG0295-ER40896. l2 Now at Dragon Systems, Newton, MA 02160, USA. l3 Supportedb y the US Departmento f Energy, contract DE-FGOS-92ER40742. I4 Supportedb y the US Departmentof Energy, contract DEFCOS-85ER250000. l5 Permanenta ddress:U niversitat de Barcelona, 08208 Barcelona, Spain. I6 Supported by the Bundesministeriumf iir Forschung und Tech-",

year = "1996",

month = sep,

day = "19",

doi = "10.1016/0370-2693(96)00925-2",

language = "English (US)",

volume = "384",

pages = "449--460",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-4",

}

Buskulic, D, de Bonis, I, Decamp, D, Ghez, P, Goy, C, Lees, JP, Lucotte, A, Minard, MN, Nief, JY, Odier, P, Pietrzyk, B, Casado, MP, Chmeissani, M, Crespo, JM, Delfino, M, Efthymiopoulos, I, Fernandez, E, Fernandez-Bosman, M, Garrido, LI, Juste, A, Martinez, M, Orteu, S, Padilla, C, Park, IC, Pascual, A, Perlas, JA, Riu, I, Sanchez, F, Teubert, F, Colaleo, A, Creanza, D, de Palma, M, Gelao, G, Girone, M, Iaselli, G, Maggi, G, Maggi, M, Marinelli, N, Nuzzo, S, Ranieri, A, Raso, G, 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, Alemany, R, Bazarko, AO, Bonvicini, G, Cattaneo, M, Comas, P, Coyle, P, Drevermann, H, Forty, RW, Frank, M, Hagelberg, R, Harvey, J, Janot, P, Jost, B, Kneringer, E, Knobloch, J, Lehraus, I, Lutters, G, Martin, EB, Mato, P, Minten, A, Miquel, R, Mir, LM, Moneta, L, Oest, T, Pacheco, A, Pusztaszeri, JF, Ranjard, F, Rensing, P, Rolandi, L, Schlatter, D, Schmelling, M, Schmitt, M, Schneider, O, Tejessy, W, Tomalin, IR, Venturi, A, Wachsmuth, H, Wagner, A, Ajaltouni, Z, Barrès, 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, Rosnet, P, Rossignol, JM, Fearnley, T, Hansen, JB, Hansen, JD, Hansen, JR, Hansen, PH, Nilsson, BS, Rensch, B, Wäänänen, A, Kyriakis, A, Markou, C, Simopoulou, E, Siotis, I, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, JC, Bourdon, P, Rougé, A, Rumpf, M, Valassi, A, Verderi, M, Videau, H, Candlin, DJ, Parsons, MI, Focardi, E, Parrini, G, Corden, M, Georgiopoulos, C, Jaffe, DE, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Carnpana, P, Capon, G, Casper, D, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, GP, Passalacqua, L, Pepe-Altarelli, M, Curtis, L, Dorris, SJ, Halley, AW, Knowles, IG, Lynch, JG, O'Shea, V, Raine, C, Reeves, P, Scarr, JM, Smith, K, Teixeira-Dias, P, Thompson, AS, Thomson, F, Thorn, S, Turnbull, RM, Becker, U, Geweniger, C, Graefe, G, Hanke, P, Hansper, G, Hepp, V, Kluge, EE, Putzer, A, Schmidt, M, Sommer, J, Stenzel, H, Tittel, K, Werner, S, Wunsch, M, Abbaneo, D, Beuselinck, R, Binnie, DM, Cameron, W, Dornan, PJ, Moutoussi, A, Nash, J, Sedgbeer, JK, Stacey, AM, Williams, MD, Dissertori, G, Girtler, P, Kuhn, D, Rudolph, G, Betteridge, AP, Bowdery, CK, Colrain, P, Crawford, G, Finch, AJ, Foster, F, Hughes, G, Sloan, T, Williams, MI, Galla, A, Giehl, I, Greene, AM, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, HG, van Gemmeren, P, Zeitnitz, C, Aubert, JJ, Bencheikh, AM, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Diaconu, C, Etienne, F, Konstantinidis, N, Payre, P, Rousseau, D, Talby, M, Sadouki, A, Thulasidas, M, Trabelsi, K, Aleppo, M, Ragusa, F, Abt, I, Assmann, R, Bauer, C, Blum, W, Dietl, H, Dydak, F, Ganis, G, Gotzhein, C, Jakobs, K, Kroha, H, Lütjens, G, Lutz, G, Manner, W, Moser, HG, Richter, R, Rosado-Schlosser, A, Schael, S, Settles, R, Seywerd, H, Denis, RS, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Choi, Y, Cordier, A, Davier, M, Duflot, L, Grivaz, JF, Heusse, P, Höcker, A, Jacholkowska, A, Jacquet, M, Kim, DW, Le Diberder, F, Lefrançois, J, Lutz, AM, Nikolic, I, Park, HJ, Schune, MH, Simion, S, Veillet, JJ, Videau, I, Zerwas, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, MA, Ciulli, V, Dell'Or so, R, Fantechi, R, Ferrante, I, Foà, L, Forti, F, Giassi, A, Giorgi, MA, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, PS, Messineo, A, Palla, F, Rizzo, G, Sanguinetti, G, Sciabà, A, Spagnolo, P, Steinberger, J, Tenchini, R, Tonelli, G, Vannini, C, Verdini, PG, Walsh, J, Blair, GA, Bryant, LM, Cerutti, F, Chambers, JT, Gao, Y, Green, MG, Medealf, T, Perrodo, P, Strong, JA, von Wimmersperg-Toeller, JH, Botterill, DR, Clifft, RW, Edgecock, TR, Haywood, S, Maley, P, Norton, PR, Thompson, JC, Wright, AE, Bloch-Devaux, B, Colas, P, Emery, S, Kozanecki, W, Lançon, E, Lemaire, MC, Locci, E, Marx, B, Perez, P, Rander, J, Renardy, JF, Roussarie, A, Schuller, JP, Schwindling, J, Trabelsi, A, Vallage, B, Black, SN, Dann, JH, Johnson, RP, Kim, HY, Litke, AM, McNeil, MA, Taylor, G, Booth, CN, Boswell, R, Brew, CAJ, Cartwright, S, Combley, F, Koksal, A, Letho, M, Newton, WM, Reeve, J, Thompson, LF, Böhrer, A, Brandt, S, Büscher, V, Cowan, G, Grupen, C, Minguet-Rodriguez, J, Rivera, F, Saraiva, P, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Delia Marina, R, Giannini, G, Gobbo, B, Musolino, G, Rothberg, J, Wasserbaech, S, Armstrong, SR, Elmer, P, Feng, Z, Ferguson, DPS, Gao, YS, González, S, Grahl, J, Greening, TC, Hayes, OJ, Hu, H, McNamara, PA, Nachtman, JM, Orejudos, W, Pan, YB, Saadi, Y, Scott, IJ, Walsh, AM, Wu, SL, Wu, X, Yamartino, JM, Zheng, M & Zobernig, G 1996, 'Strange b baryon production and lifetime in Z decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 384, no. 1-4, pp. 449-460. https://doi.org/10.1016/0370-2693(96)00925-2

TY - JOUR

T1 - Strange b baryon production and lifetime in Z decays

AU - Buskulic, D.

AU - de Bonis, I.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Odier, P.

AU - Pietrzyk, B.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Efthymiopoulos, I.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, LI

AU - Juste, A.

AU - Martinez, M.

AU - Orteu, S.

AU - Padilla, C.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Teubert, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

AU - Girone, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Marinelli, N.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Alemany, R.

AU - Bazarko, A. O.

AU - Bonvicini, G.

AU - Cattaneo, M.

AU - Comas, P.

AU - Coyle, P.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Hagelberg, R.

AU - Harvey, J.

AU - Janot, P.

AU - Jost, B.

AU - Kneringer, E.

AU - Knobloch, J.

AU - Lehraus, I.

AU - Lutters, G.

AU - Martin, E. B.

AU - Mato, P.

AU - Minten, A.

AU - Miquel, R.

AU - Mir, L. M.

AU - Moneta, L.

AU - Oest, T.

AU - Pacheco, A.

AU - Pusztaszeri, J. F.

AU - Ranjard, F.

AU - Rensing, P.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Schmelling, M.

AU - Schmitt, M.

AU - Schneider, O.

AU - Tejessy, W.

AU - Tomalin, I. R.

AU - Venturi, A.

AU - Wachsmuth, H.

AU - Wagner, A.

AU - Ajaltouni, Z.

AU - Barrès, A.

AU - Boyer, C.

AU - Falvard, A.

AU - Gay, P.

AU - Guicheney, C.

AU - Henrard, P.

AU - Jousset, J.

AU - Michel, B.

AU - Monteil, S.

AU - Montret, J. C.

AU - Pallin, D.

AU - Perret, P.

AU - Podlyski, F.

AU - Proriol, J.

AU - Rosnet, P.

AU - Rossignol, J. M.

AU - Fearnley, T.

AU - Hansen, J. B.

AU - Hansen, J. D.

AU - Hansen, J. R.

AU - Hansen, P. H.

AU - Nilsson, B. S.

AU - Rensch, B.

AU - Wäänänen, A.

AU - Kyriakis, A.

AU - Markou, C.

AU - Simopoulou, E.

AU - Siotis, I.

AU - Vayaki, A.

AU - Zachariadou, K.

AU - Blondel, A.

AU - Bonneaud, G.

AU - Brient, J. C.

AU - Bourdon, P.

AU - Rougé, A.

AU - Rumpf, M.

AU - Valassi, A.

AU - Verderi, M.

AU - Videau, H.

AU - Candlin, D. J.

AU - Parsons, M. I.

AU - Focardi, E.

AU - Parrini, G.

AU - Corden, M.

AU - Georgiopoulos, C.

AU - Jaffe, D. E.

AU - Antonelli, A.

AU - Bencivenni, G.

AU - Bologna, G.

AU - Bossi, F.

AU - Carnpana, P.

AU - Capon, G.

AU - Casper, D.

AU - Chiarella, V.

AU - Felici, G.

AU - Laurelli, P.

AU - Mannocchi, G.

AU - Murtas, F.

AU - Murtas, G. P.

AU - Passalacqua, L.

AU - Pepe-Altarelli, M.

AU - Curtis, L.

AU - Dorris, S. J.

AU - Halley, A. W.

AU - Knowles, I. G.

AU - Lynch, J. G.

AU - O'Shea, V.

AU - Raine, C.

AU - Reeves, P.

AU - Scarr, J. M.

AU - Smith, K.

AU - Teixeira-Dias, P.

AU - Thompson, A. S.

AU - Thomson, F.

AU - Thorn, S.

AU - Turnbull, R. M.

AU - Becker, U.

AU - Geweniger, C.

AU - Graefe, G.

AU - Hanke, P.

AU - Hansper, G.

AU - Hepp, V.

AU - Kluge, E. E.

AU - Putzer, A.

AU - Schmidt, M.

AU - Sommer, J.

AU - Stenzel, H.

AU - Tittel, K.

AU - Werner, S.

AU - Wunsch, M.

AU - Abbaneo, D.

AU - Beuselinck, R.

AU - Binnie, D. M.

AU - Cameron, W.

AU - Dornan, P. J.

AU - Moutoussi, A.

AU - Nash, J.

AU - Sedgbeer, J. K.

AU - Stacey, A. M.

AU - Williams, M. D.

AU - Dissertori, G.

AU - Girtler, P.

AU - Kuhn, D.

AU - Rudolph, G.

AU - Betteridge, A. P.

AU - Bowdery, C. K.

AU - Colrain, P.

AU - Crawford, G.

AU - Finch, A. J.

AU - Foster, F.

AU - Hughes, G.

AU - Sloan, T.

AU - Williams, M. I.

AU - Galla, A.

AU - Giehl, I.

AU - Greene, A. M.

AU - Kleinknecht, K.

AU - Quast, G.

AU - Renk, B.

AU - Rohne, E.

AU - Sander, H. G.

AU - van Gemmeren, P.

AU - Zeitnitz, C.

AU - Aubert, J. J.

AU - Bencheikh, A. M.

AU - Benchouk, C.

AU - Bonissent, A.

AU - Bujosa, G.

AU - Calvet, D.

AU - Carr, J.

AU - Diaconu, C.

AU - Etienne, F.

AU - Konstantinidis, N.

AU - Payre, P.

AU - Rousseau, D.

AU - Talby, M.

AU - Sadouki, A.

AU - Thulasidas, M.

AU - Trabelsi, K.

AU - Aleppo, M.

AU - Ragusa, F.

AU - Abt, I.

AU - Assmann, R.

AU - Bauer, C.

AU - Blum, W.

AU - Dietl, H.

AU - Dydak, F.

AU - Ganis, G.

AU - Gotzhein, C.

AU - Jakobs, K.

AU - Kroha, H.

AU - Lütjens, G.

AU - Lutz, G.

AU - Manner, W.

AU - Moser, H. G.

AU - Richter, R.

AU - Rosado-Schlosser, A.

AU - Schael, S.

AU - Settles, R.

AU - Seywerd, H.

AU - Denis, R. S.

AU - Wiedenmann, W.

AU - Wolf, G.

AU - Boucrot, J.

AU - Callot, O.

AU - Choi, Y.

AU - Cordier, A.

AU - Davier, M.

AU - Duflot, L.

AU - Grivaz, J. F.

AU - Heusse, P.

AU - Höcker, A.

AU - Jacholkowska, A.

AU - Jacquet, M.

AU - Kim, D. W.

AU - Le Diberder, F.

AU - Lefrançois, J.

AU - Lutz, A. M.

AU - Nikolic, I.

AU - Park, H. J.

AU - Schune, M. H.

AU - Simion, S.

AU - Veillet, J. J.

AU - Videau, I.

AU - Zerwas, D.

AU - Azzurri, P.

AU - Bagliesi, G.

AU - Batignani, G.

AU - Bettarini, S.

AU - Bozzi, C.

AU - Calderini, G.

AU - Carpinelli, M.

AU - Ciocci, M. A.

AU - Ciulli, V.

AU - Dell'Or so, R.

AU - Fantechi, R.

AU - Ferrante, I.

AU - Foà, L.

AU - Forti, F.

AU - Giassi, A.

AU - Giorgi, M. A.

AU - Gregorio, A.

AU - Ligabue, F.

AU - Lusiani, A.

AU - Marrocchesi, P. S.

AU - Messineo, A.

AU - Palla, F.

AU - Rizzo, G.

AU - Sanguinetti, G.

AU - Sciabà, A.

AU - Spagnolo, P.

AU - Steinberger, J.

AU - Tenchini, R.

AU - Tonelli, G.

AU - Vannini, C.

AU - Verdini, P. G.

AU - Walsh, J.

AU - Blair, G. A.

AU - Bryant, L. M.

AU - Cerutti, F.

AU - Chambers, J. T.

AU - Gao, Y.

AU - Green, M. G.

AU - Medealf, T.

AU - Perrodo, P.

AU - Strong, J. A.

AU - von Wimmersperg-Toeller, J. H.

AU - Botterill, D. R.

AU - Clifft, R. W.

AU - Edgecock, T. R.

AU - Haywood, S.

AU - Maley, P.

AU - Norton, PR

AU - Thompson, J. C.

AU - Wright, A. E.

AU - Bloch-Devaux, B.

AU - Colas, P.

AU - Emery, S.

AU - Kozanecki, W.

AU - Lançon, E.

AU - Lemaire, M. C.

AU - Locci, E.

AU - Marx, B.

AU - Perez, P.

AU - Rander, J.

AU - Renardy, J. F.

AU - Roussarie, A.

AU - Schuller, J. P.

AU - Schwindling, J.

AU - Trabelsi, A.

AU - Vallage, B.

AU - Black, S. N.

AU - Dann, J. H.

AU - Johnson, R. P.

AU - Kim, H. Y.

AU - Litke, A. M.

AU - McNeil, M. A.

AU - Taylor, G.

AU - Booth, C. N.

AU - Boswell, R.

AU - Brew, C. A.J.

AU - Cartwright, S.

AU - Combley, F.

AU - Koksal, A.

AU - Letho, M.

AU - Newton, W. M.

AU - Reeve, J.

AU - Thompson, L. F.

AU - Böhrer, A.

AU - Brandt, S.

AU - Büscher, V.

AU - Cowan, G.

AU - Grupen, C.

AU - Minguet-Rodriguez, J.

AU - Rivera, F.

AU - Saraiva, P.

AU - Smolik, L.

AU - Stephan, F.

AU - Apollonio, M.

AU - Bosisio, L.

AU - Delia Marina, R.

AU - Giannini, G.

AU - Gobbo, B.

AU - Musolino, G.

AU - Rothberg, J.

AU - Wasserbaech, S.

AU - Armstrong, S. R.

AU - Elmer, P.

AU - Feng, Z.

AU - Ferguson, D. P.S.

AU - Gao, Y. S.

AU - González, S.

AU - Grahl, J.

AU - Greening, T. C.

AU - Hayes, O. J.

AU - Hu, H.

AU - McNamara, P. A.

AU - Nachtman, J. M.

AU - Orejudos, W.

AU - Pan, Y. B.

AU - Saadi, Y.

AU - Scott, I. J.

AU - Walsh, A. M.

AU - Wu, S. L.

AU - Wu, X.

AU - Yamartino, J. M.

AU - Zheng, M.

AU - Zobernig, G.

N1 - Funding Information: 1 Now at CERN, 1211 Geneva 23, Switzerland. 2 Supported by Direccidn General de Investigaci6n Cientilica y Tknica, Spain. 3 Now at Dipartimento di Fisica, Universitl di Lecce, 73100 Lecce, Italy. 4 Also Istituto di Fisica Generale, Universitl di Torino, Torino, Italy. 5 Also Istituto di Cosmo-Geofisica de1 C.N.R., Torino, Italy. 6 Supported by the Commission of the European Communities, contract ERBCHBICT941234. 7 Supported by CICYT, Spain. 8 Supported by the National Science Foundation of China. 9 Supported by the Danish Natural Science Research Council. Funding Information: nologie, Germany. l7 Supported by the Direction des Sciences de la Ma&e, C.E.A. I* Supported by Fends zur F6rdemng der wissenschaftlichen Forschung, Austria. lg Permanent address: Kangnung National University, Kangnung, Korea. 2oN ow at DESY, Hamburg, Germany. ‘I Also at CERN, 1211 Geneva 23, Switzerland. ** Supported by the US Departmento f Energy, grant DE-FG03-92ER40689. 23N ow at Wayne State University, Detroit, MI 48202, USA. 24N ow at Max-Plank-In&tit ftir Kernphysik, Heidelberg, Germany. 25A lso at Istituto di Matematica e Fisica, Universiti di Sassari, Sassari, Italy. 26P ermanent address: Sung Kyun Kwon University, Suwon, Korea. 27N ow at The Johns Hopkins University, Baltimore, MD 21218, USA. 28N ow at Harvard University, Cambridge, MA 02138, USA. 2gN ow at Rutgers University, Piscataway, NJ 08855-0849, USA. 3oT hroughout this paper, E:b is used as a generic name for ei and EL, 8, for e: and a$, B for B+, B” and B, mesons, and D for D+, Do and D, mesons. Charge conjugate modes are implied everywhere. Funding Information: lo Supportedb y the UK Particle Physics and Astronomy Research Council. *’ Supportedb y the US Departmento f Energy, grant DE-FG0295-ER40896. l2 Now at Dragon Systems, Newton, MA 02160, USA. l3 Supportedb y the US Departmento f Energy, contract DE-FGOS-92ER40742. I4 Supportedb y the US Departmentof Energy, contract DEFCOS-85ER250000. l5 Permanenta ddress:U niversitat de Barcelona, 08208 Barcelona, Spain. I6 Supported by the Bundesministeriumf iir Forschung und Tech-

PY - 1996/9/19

Y1 - 1996/9/19

N2 - In a data sample of approximately four million hadronic Z decays recorded with the ALEPH detector from 1990 to 1995, a search for the strange b baryon Ξb is performed with a study of Ξ-lepton correlations. Forty-four events with same sign Ξ-ℓ- combinations are found whereas 8.4 are expected based on the rate of opposite sign Ξ-ℓ+ combinations. This significant excess is interpreted as evidence for Ξb semileptonic decays. The measured product branching ratio is Br(b → Ξb) × Br(Ξb → ΧcΧℓ-νl) × Br(XΧc → Ξ-Χ′) = (5.4±1.1(stat)±0.8(syst)) × 10-4 per lepton species, averaged over electrons and muons, with Χc a charmed baryon. The Ξb lifetime is measured to be τΞb = 1.35-0.28+0.37 (stat) 0.17+0.15 (syst) ps.

AB - In a data sample of approximately four million hadronic Z decays recorded with the ALEPH detector from 1990 to 1995, a search for the strange b baryon Ξb is performed with a study of Ξ-lepton correlations. Forty-four events with same sign Ξ-ℓ- combinations are found whereas 8.4 are expected based on the rate of opposite sign Ξ-ℓ+ combinations. This significant excess is interpreted as evidence for Ξb semileptonic decays. The measured product branching ratio is Br(b → Ξb) × Br(Ξb → ΧcΧℓ-νl) × Br(XΧc → Ξ-Χ′) = (5.4±1.1(stat)±0.8(syst)) × 10-4 per lepton species, averaged over electrons and muons, with Χc a charmed baryon. The Ξb lifetime is measured to be τΞb = 1.35-0.28+0.37 (stat) 0.17+0.15 (syst) ps.

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U2 - 10.1016/0370-2693(96)00925-2

DO - 10.1016/0370-2693(96)00925-2

M3 - Article

AN - SCOPUS:0042595431

SN - 0370-2693

VL - 384

SP - 449

EP - 460

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-4

ER -

Strange b baryon production and lifetime in Z decays

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