A measurement of Rb using a lifetime-mass tag

R. Barate; D. Buskulic; D. Decamp; P. Ghez; C. Goy; J. P. Lees; A. Lucotte; M. N. Minard; J. Y. Nief; B. Pietrzyk; M. P. Casado; M. Chmeissani; P. Comas; J. M. Crespo; M. Delfino; E. Fernandez; M. Fernandez-Bosman; L. Garrido; A. Juste; M. Martinez; R. Miquel; L. M. Mir; 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; G. Iaselli; G. Maggi; M. Maggi; N. Marinelli; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; R. Alemany; U. Becker; A. O. Bazarko; P. Bright-Thomas; M. Cattaneo; F. Cerutti; H. Drevermann; R. W. Forty; M. Frank; R. Hagelberg; J. Harvey; P. Janot; B. Jost; E. Kneringer; J. Knobloch; I. Lehraus; G. Lutters; P. Mato; A. Minten; L. Moneta; A. Pacheco; J. F. Pusztaszeri; F. Ranjard; P. Rensing; G. Rizzo; L. Rolandi; D. Schlatter; M. Schmitt; O. Schneider; W. Tejessy; I. R. Tomalin; H. Wachsmuth; A. Wagner; Z. Ajaltouni; A. Barrès; C. Boyer; A. Falvard; C. Ferdi; 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; G. Daskalakis; A. Kyriakis; C. Markou; E. Simopoulou; I. Siotis; A. Vayaki; 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; K. Zachariadou; M. Corden; C. Georgiopoulos; D. E. Jaffe; A. Antonelli; G. Bencivenni; G. Bologna; F. Bossi; P. Campana; 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; J. M. Scarr; K. Smith; P. Teixeira-Dias; A. S. Thompson; E. Thomson; F. Thomson; R. M. Turnbull; C. Geweniger; G. Graefe; P. Hanke; G. Hansper; V. Hepp; E. E. Kluge; A. Putzer; M. Schmidt; J. Sommer; K. Tittel; S. Werner; M. Wunsch; R. Beuselinck; D. M. Binnie; W. Cameron; PJ Dornan; M. Girone; S. Goodsir; E. B. Martin; A. Moutoussi; J. Nash; J. K. Sedgbeer; A. M. Stacey; M. D. Williams; G. Dissertori; V. M. Ghete; 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; C. Hoffmann; K. Jakobs; K. Kleinknecht; G. Quast; B. Renk; E. Rohne; H. G. Sander; P. van Gemmeren; C. Zeitnitz; J. J. Aubert; C. Benchouk; A. Bonissent; G. Bujosa; D. Calvet; J. Carr; P. Coyle; C. Diaconu; F. Etienne; N. Konstantinidis; O. Leroy; F. Motsch; P. Payre; D. Rousseau; M. Talby; A. Sadouki; M. Thulasidas; K. Trabelsi; M. Aleppo; F. Ragusa; R. Berlich; W. Blum; D. Brown; V. Büscher; H. Dietl; F. Dydak; G. Ganis; C. Gotzhein; 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; H. Stenzel; W. Wiedenmann; G. Wolf; J. Boucrot; O. Callot; S. Chen; 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; M. H. Schune; S. Simion; E. Tournefier; 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'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; F. Palla; G. Sanguinetti; A. Sciabà; P. Spagnolo; J. Steinberger; R. Tenchini; G. Tonelli; C. Vannini; A. Venturi; PG Verdini; G. A. Blair; L. M. Bryant; J. T. Chambers; Y. Gao; M. G. Green; T. Medcalf; 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; 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; M. S. Kelly; M. Lehto; W. M. Newton; J. Reeve; L. F. Thompson; A. Böhrer; S. Brandt; G. Cowan; C. Grupen; 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; E. Charles; P. Elmer; D. P S Ferguson; Y. S. Gao; S. González; T. C. Greening; O. J. Hayes; H. Hu; S. Jin; P. A. McNamara; J. M. Nachtman; J. Nielsen; W. Orejudos; Y. B. Pan; Y. Saadi; I. J. Scott; J. Walsh; S. L. Wu; X. Wu; J. M. Yamartino; G. Zobernig

doi:10.1016/S0370-2693(97)00406-1

A measurement of R_b using a lifetime-mass tag

R. Barate^*, D. Buskulic, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, M. N. Minard, J. Y. Nief, B. Pietrzyk, M. P. Casado, M. Chmeissani, P. Comas, J. M. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, L. Garrido, A. Juste, M. MartinezR. Miquel, L. M. Mir, 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, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, R. Alemany, U. Becker, A. O. Bazarko, P. Bright-Thomas, M. Cattaneo, F. Cerutti, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, G. Lutters, P. Mato, A. Minten, L. Moneta, A. Pacheco, J. F. Pusztaszeri, F. Ranjard, P. Rensing, G. Rizzo, L. Rolandi, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, I. R. Tomalin, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrès, C. Boyer, A. Falvard, C. Ferdi, 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, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, 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, K. Zachariadou, M. Corden, C. Georgiopoulos, D. E. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, 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, J. M. Scarr, K. Smith, P. Teixeira-Dias, A. S. Thompson, E. Thomson, F. Thomson, R. M. Turnbull, C. Geweniger, G. Graefe, P. Hanke, G. Hansper, V. Hepp, E. E. Kluge, A. Putzer, M. Schmidt, J. Sommer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. M. Binnie, W. Cameron, PJ Dornan, M. Girone, S. Goodsir, E. B. Martin, A. Moutoussi, J. Nash, J. K. Sedgbeer, A. M. Stacey, M. D. Williams, G. Dissertori, V. M. Ghete, 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, C. Hoffmann, K. Jakobs, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. G. Sander, P. van Gemmeren, C. Zeitnitz, J. J. Aubert, C. Benchouk, A. Bonissent, G. Bujosa, D. Calvet, J. Carr, P. Coyle, C. Diaconu, F. Etienne, N. Konstantinidis, O. Leroy, F. Motsch, P. Payre, D. Rousseau, M. Talby, A. Sadouki, M. Thulasidas, K. Trabelsi, M. Aleppo, F. Ragusa, R. Berlich, W. Blum, D. Brown, V. Büscher, H. Dietl, F. Dydak, G. Ganis, C. Gotzhein, 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, H. Stenzel, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, S. Chen, 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, M. H. Schune, S. Simion, E. Tournefier, 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'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, F. Palla, G. Sanguinetti, A. Sciabà, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, C. Vannini, A. Venturi, PG Verdini, G. A. Blair, L. M. Bryant, J. T. Chambers, Y. Gao, M. G. Green, T. Medcalf, 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, 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, M. S. Kelly, M. Lehto, W. M. Newton, J. Reeve, L. F. Thompson, A. Böhrer, S. Brandt, G. Cowan, C. Grupen, 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, E. Charles, P. Elmer, D. P S Ferguson, Y. S. Gao, S. González, T. C. Greening, O. J. Hayes, H. Hu, S. Jin, P. A. McNamara, J. M. Nachtman, J. Nielsen, W. Orejudos, Y. B. Pan, Y. Saadi, I. J. Scott, J. Walsh, S. L. Wu, X. Wu, J. M. Yamartino, G. Zobernig

^*Corresponding author for this work

Physics and Astronomy

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

49 Scopus citations

Abstract

ALEPH's published measurement of R_b = Γ(Ζ → bb̄)/Γ(Ζ → hadrons) using a lifetime tag is updated using the full LEP 1 data sample. Considerable effort has been devoted to understanding systematic effects. Charm background is better controlled by combining the lifetime tag with a tag based on the b/c hadron mass difference. Furthermore, the algorithm used to reconstruct the event primary vertex is designed so as to reduce correlations between the two hemispheres of an event. The value of R_b is measured to be 0.2167 ± 0.0011 (stat) ± 0.0013 (syst).

Original language	English (US)
Pages (from-to)	150-162
Number of pages	13
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	401
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(97)00406-1
State	Published - May 22 1997

Funding

’ Now at CERN, 1211 Geneva 23, Switzerland. 2 Also at CERN, 1211 Geneva 23, Switzerland. 3 Also at Dipartimento di Fisica, INFN, Sezione di Catania, Catania, Italy. 4 Also Istituto di Fisica Generale, Universita di Torino, Torino, Italy. 5 Also Istituto di Cosmo-Geofisica de1C .N.R., Torino, Italy. s Supported by the Commission of the European Communities, contract ERBCHBICT941234. ’ Supported by CICYT, Spain. * Supported by the National Science Foundation of China. g Supported by the Danish Natural Science Research Council. lo Supported by the UK Particle Physics and Astronomy Research Council. l1 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. l4 Supportedb y the US DepartmentofEnergy, contract DE-FCOS-85ER250000. l5 Permanenta ddress:U niversitat de Barcelona, 08208 Barcelona, Spain. l6 Supportedb y the Bundesministeriumf ur Bildung, Wissenschaft, Forschung und Technologie, Germany. l7 Supported by the Direction des Sciences de la Matiere, C.E.A.

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/S0370-2693(97)00406-1

Cite this

Barate, R., Buskulic, D., Decamp, 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., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Juste, A., ... Zobernig, G. (1997). A measurement of R_b using a lifetime-mass tag. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 401(1-2), 150-162. https://doi.org/10.1016/S0370-2693(97)00406-1

@article{b11e80abcfdd4ec6ae0787ba815b10e0,

title = "A measurement of Rb using a lifetime-mass tag",

abstract = "ALEPH's published measurement of Rb = Γ(Ζ → b{\=b})/Γ(Ζ → hadrons) using a lifetime tag is updated using the full LEP 1 data sample. Considerable effort has been devoted to understanding systematic effects. Charm background is better controlled by combining the lifetime tag with a tag based on the b/c hadron mass difference. Furthermore, the algorithm used to reconstruct the event primary vertex is designed so as to reduce correlations between the two hemispheres of an event. The value of Rb is measured to be 0.2167 ± 0.0011 (stat) ± 0.0013 (syst).",

author = "R. Barate and D. Buskulic 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 B. Pietrzyk and Casado, {M. P.} and M. Chmeissani and P. Comas and Crespo, {J. M.} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and L. Garrido and A. Juste and M. Martinez and R. Miquel and Mir, {L. M.} 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 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 A. Tricomi 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 D. Abbaneo and R. Alemany and U. Becker and Bazarko, {A. O.} and P. Bright-Thomas and M. Cattaneo and F. Cerutti 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 P. Mato and A. Minten and L. Moneta and A. Pacheco and Pusztaszeri, {J. F.} and F. Ranjard and P. Rensing and G. Rizzo and L. Rolandi and D. Schlatter and M. Schmitt and O. Schneider and W. Tejessy and Tomalin, {I. R.} and H. Wachsmuth and A. Wagner and Z. Ajaltouni and A. Barr{\`e}s and C. Boyer and A. Falvard and C. Ferdi 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 G. Daskalakis and A. Kyriakis and C. Markou and E. Simopoulou and I. Siotis and A. Vayaki 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 K. Zachariadou and M. Corden and C. Georgiopoulos and Jaffe, {D. E.} and A. Antonelli and G. Bencivenni and G. Bologna and F. Bossi and P. Campana 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 Scarr, {J. M.} and K. Smith and P. Teixeira-Dias and Thompson, {A. S.} and E. Thomson and F. Thomson and Turnbull, {R. M.} 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 K. Tittel and S. Werner and M. Wunsch and R. Beuselinck and Binnie, {D. M.} and W. Cameron and PJ Dornan and M. Girone and S. Goodsir and Martin, {E. B.} and A. Moutoussi and J. Nash and Sedgbeer, {J. K.} and Stacey, {A. M.} and Williams, {M. D.} and G. Dissertori and Ghete, {V. M.} 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 C. Hoffmann and K. Jakobs 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 C. Benchouk and A. Bonissent and G. Bujosa and D. Calvet and J. Carr and P. Coyle and C. Diaconu and F. Etienne and N. Konstantinidis and O. Leroy and F. Motsch 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 R. Berlich and W. Blum and D. Brown and V. B{\"u}scher and H. Dietl and F. Dydak and G. Ganis and C. Gotzhein 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 H. Stenzel and W. Wiedenmann and G. Wolf and J. Boucrot and O. Callot and S. Chen 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 Schune, {M. H.} and S. Simion and E. Tournefier 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 R. Dell'Orso 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. Sanguinetti and A. Sciab{\`a} and P. Spagnolo and J. Steinberger and R. Tenchini and G. Tonelli and C. Vannini and A. Venturi and PG Verdini and Blair, {G. A.} and Bryant, {L. M.} and Chambers, {J. T.} and Y. Gao and Green, {M. G.} and T. Medcalf 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 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 Kelly, {M. S.} and M. Lehto and Newton, {W. M.} and J. Reeve and Thompson, {L. F.} and A. B{\"o}hrer and S. Brandt and G. Cowan and C. Grupen 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 E. Charles and P. Elmer and Ferguson, {D. P S} and Gao, {Y. S.} and S. Gonz{\'a}lez and Greening, {T. C.} and Hayes, {O. J.} and H. Hu and S. Jin and McNamara, {P. A.} and Nachtman, {J. M.} and J. Nielsen and W. Orejudos and Pan, {Y. B.} and Y. Saadi and Scott, {I. J.} and J. Walsh and Wu, {S. L.} and X. Wu and Yamartino, {J. M.} and G. Zobernig",

note = "Funding Information: {\textquoteright} Now at CERN, 1211 Geneva 23, Switzerland. 2 Also at CERN, 1211 Geneva 23, Switzerland. 3 Also at Dipartimento di Fisica, INFN, Sezione di Catania, Catania, Italy. 4 Also Istituto di Fisica Generale, Universita di Torino, Torino, Italy. 5 Also Istituto di Cosmo-Geofisica de1C .N.R., Torino, Italy. s Supported by the Commission of the European Communities, contract ERBCHBICT941234. {\textquoteright} Supported by CICYT, Spain. * Supported by the National Science Foundation of China. g Supported by the Danish Natural Science Research Council. lo Supported by the UK Particle Physics and Astronomy Research Funding Information: Council. l1 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. l4 Supportedb y the US DepartmentofEnergy, contract DE-FCOS-85ER250000. l5 Permanenta ddress:U niversitat de Barcelona, 08208 Barcelona, Spain. l6 Supportedb y the Bundesministeriumf ur Bildung, Wissenschaft, Forschung und Technologie, Germany. l7 Supported by the Direction des Sciences de la Matiere, C.E.A.",

year = "1997",

month = may,

day = "22",

doi = "10.1016/S0370-2693(97)00406-1",

language = "English (US)",

volume = "401",

pages = "150--162",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

Barate, R, Buskulic, D, Decamp, D, Ghez, P, Goy, C, Lees, JP, Lucotte, A, Minard, MN, Nief, JY, Pietrzyk, B, Casado, MP, Chmeissani, M, Comas, P, Crespo, JM, Delfino, M, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Juste, A, Martinez, M, Miquel, R, Mir, LM, 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, Iaselli, G, 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, AO, Bright-Thomas, P, Cattaneo, M, Cerutti, F, Drevermann, H, Forty, RW, Frank, M, Hagelberg, R, Harvey, J, Janot, P, Jost, B, Kneringer, E, Knobloch, J, Lehraus, I, Lutters, G, Mato, P, Minten, A, Moneta, L, Pacheco, A, Pusztaszeri, JF, Ranjard, F, Rensing, P, Rizzo, G, Rolandi, L, Schlatter, D, Schmitt, M, Schneider, O, Tejessy, W, Tomalin, IR, Wachsmuth, H, Wagner, A, Ajaltouni, Z, Barrès, A, Boyer, C, Falvard, A, Ferdi, C, 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, Daskalakis, G, Kyriakis, A, Markou, C, Simopoulou, E, Siotis, I, Vayaki, A, 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, Zachariadou, K, Corden, M, Georgiopoulos, C, Jaffe, DE, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, 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, Scarr, JM, Smith, K, Teixeira-Dias, P, Thompson, AS, Thomson, E, Thomson, F, Turnbull, RM, Geweniger, C, Graefe, G, Hanke, P, Hansper, G, Hepp, V, Kluge, EE, Putzer, A, Schmidt, M, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, DM, Cameron, W, Dornan, PJ, Girone, M, Goodsir, S, Martin, EB, Moutoussi, A, Nash, J, Sedgbeer, JK, Stacey, AM, Williams, MD, Dissertori, G, Ghete, VM, 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, Hoffmann, C, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, HG, van Gemmeren, P, Zeitnitz, C, Aubert, JJ, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Coyle, P, Diaconu, C, Etienne, F, Konstantinidis, N, Leroy, O, Motsch, F, Payre, P, Rousseau, D, Talby, M, Sadouki, A, Thulasidas, M, Trabelsi, K, Aleppo, M, Ragusa, F, Berlich, R, Blum, W, Brown, D, Büscher, V, Dietl, H, Dydak, F, Ganis, G, Gotzhein, C, Kroha, H, Lütjens, G, Lutz, G, Manner, W, Moser, HG, Richter, R, Rosado-Schlosser, A, Schael, S, Settles, R, Seywerd, H, Denis, RS, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Chen, S, 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, Schune, MH, Simion, S, Tournefier, E, 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'Orso, 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, Sanguinetti, G, Sciabà, A, Spagnolo, P, Steinberger, J, Tenchini, R, Tonelli, G, Vannini, C, Venturi, A, Verdini, PG, Blair, GA, Bryant, LM, Chambers, JT, Gao, Y, Green, MG, Medcalf, 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, 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, Kelly, MS, Lehto, M, Newton, WM, Reeve, J, Thompson, LF, Böhrer, A, Brandt, S, Cowan, G, Grupen, C, 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, Charles, E, Elmer, P, Ferguson, DPS, Gao, YS, González, S, Greening, TC, Hayes, OJ, Hu, H, Jin, S, McNamara, PA, Nachtman, JM, Nielsen, J, Orejudos, W, Pan, YB, Saadi, Y, Scott, IJ, Walsh, J, Wu, SL, Wu, X, Yamartino, JM & Zobernig, G 1997, 'A measurement of R_b using a lifetime-mass tag', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 401, no. 1-2, pp. 150-162. https://doi.org/10.1016/S0370-2693(97)00406-1

TY - JOUR

T1 - A measurement of Rb using a lifetime-mass tag

AU - Barate, R.

AU - Buskulic, D.

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 - Pietrzyk, B.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Comas, P.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, L.

AU - Juste, A.

AU - Martinez, M.

AU - Miquel, R.

AU - Mir, L. 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 - 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 - Tricomi, A.

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 - Abbaneo, D.

AU - Alemany, R.

AU - Becker, U.

AU - Bazarko, A. O.

AU - Bright-Thomas, P.

AU - Cattaneo, M.

AU - Cerutti, F.

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 - Mato, P.

AU - Minten, A.

AU - Moneta, L.

AU - Pacheco, A.

AU - Pusztaszeri, J. F.

AU - Ranjard, F.

AU - Rensing, P.

AU - Rizzo, G.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Schmitt, M.

AU - Schneider, O.

AU - Tejessy, W.

AU - Tomalin, I. R.

AU - Wachsmuth, H.

AU - Wagner, A.

AU - Ajaltouni, Z.

AU - Barrès, A.

AU - Boyer, C.

AU - Falvard, A.

AU - Ferdi, C.

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 - Daskalakis, G.

AU - Kyriakis, A.

AU - Markou, C.

AU - Simopoulou, E.

AU - Siotis, I.

AU - Vayaki, A.

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 - Zachariadou, K.

AU - Corden, M.

AU - Georgiopoulos, C.

AU - Jaffe, D. E.

AU - Antonelli, A.

AU - Bencivenni, G.

AU - Bologna, G.

AU - Bossi, F.

AU - Campana, 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 - Scarr, J. M.

AU - Smith, K.

AU - Teixeira-Dias, P.

AU - Thompson, A. S.

AU - Thomson, E.

AU - Thomson, F.

AU - Turnbull, R. M.

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 - Tittel, K.

AU - Werner, S.

AU - Wunsch, M.

AU - Beuselinck, R.

AU - Binnie, D. M.

AU - Cameron, W.

AU - Dornan, PJ

AU - Girone, M.

AU - Goodsir, S.

AU - Martin, E. B.

AU - Moutoussi, A.

AU - Nash, J.

AU - Sedgbeer, J. K.

AU - Stacey, A. M.

AU - Williams, M. D.

AU - Dissertori, G.

AU - Ghete, V. M.

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 - Hoffmann, C.

AU - Jakobs, K.

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 - Benchouk, C.

AU - Bonissent, A.

AU - Bujosa, G.

AU - Calvet, D.

AU - Carr, J.

AU - Coyle, P.

AU - Diaconu, C.

AU - Etienne, F.

AU - Konstantinidis, N.

AU - Leroy, O.

AU - Motsch, F.

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 - Berlich, R.

AU - Blum, W.

AU - Brown, D.

AU - Büscher, V.

AU - Dietl, H.

AU - Dydak, F.

AU - Ganis, G.

AU - Gotzhein, C.

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 - Stenzel, H.

AU - Wiedenmann, W.

AU - Wolf, G.

AU - Boucrot, J.

AU - Callot, O.

AU - Chen, S.

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 - Schune, M. H.

AU - Simion, S.

AU - Tournefier, E.

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'Orso, 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 - Sanguinetti, G.

AU - Sciabà, A.

AU - Spagnolo, P.

AU - Steinberger, J.

AU - Tenchini, R.

AU - Tonelli, G.

AU - Vannini, C.

AU - Venturi, A.

AU - Verdini, PG

AU - Blair, G. A.

AU - Bryant, L. M.

AU - Chambers, J. T.

AU - Gao, Y.

AU - Green, M. G.

AU - Medcalf, 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 - 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 - Kelly, M. S.

AU - Lehto, M.

AU - Newton, W. M.

AU - Reeve, J.

AU - Thompson, L. F.

AU - Böhrer, A.

AU - Brandt, S.

AU - Cowan, G.

AU - Grupen, C.

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 - Charles, E.

AU - Elmer, P.

AU - Ferguson, D. P S

AU - Gao, Y. S.

AU - González, S.

AU - Greening, T. C.

AU - Hayes, O. J.

AU - Hu, H.

AU - Jin, S.

AU - McNamara, P. A.

AU - Nachtman, J. M.

AU - Nielsen, J.

AU - Orejudos, W.

AU - Pan, Y. B.

AU - Saadi, Y.

AU - Scott, I. J.

AU - Walsh, J.

AU - Wu, S. L.

AU - Wu, X.

AU - Yamartino, J. M.

AU - Zobernig, G.

N1 - Funding Information: ’ Now at CERN, 1211 Geneva 23, Switzerland. 2 Also at CERN, 1211 Geneva 23, Switzerland. 3 Also at Dipartimento di Fisica, INFN, Sezione di Catania, Catania, Italy. 4 Also Istituto di Fisica Generale, Universita di Torino, Torino, Italy. 5 Also Istituto di Cosmo-Geofisica de1C .N.R., Torino, Italy. s Supported by the Commission of the European Communities, contract ERBCHBICT941234. ’ Supported by CICYT, Spain. * Supported by the National Science Foundation of China. g Supported by the Danish Natural Science Research Council. lo Supported by the UK Particle Physics and Astronomy Research Funding Information: Council. l1 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. l4 Supportedb y the US DepartmentofEnergy, contract DE-FCOS-85ER250000. l5 Permanenta ddress:U niversitat de Barcelona, 08208 Barcelona, Spain. l6 Supportedb y the Bundesministeriumf ur Bildung, Wissenschaft, Forschung und Technologie, Germany. l7 Supported by the Direction des Sciences de la Matiere, C.E.A.

PY - 1997/5/22

Y1 - 1997/5/22

N2 - ALEPH's published measurement of Rb = Γ(Ζ → bb̄)/Γ(Ζ → hadrons) using a lifetime tag is updated using the full LEP 1 data sample. Considerable effort has been devoted to understanding systematic effects. Charm background is better controlled by combining the lifetime tag with a tag based on the b/c hadron mass difference. Furthermore, the algorithm used to reconstruct the event primary vertex is designed so as to reduce correlations between the two hemispheres of an event. The value of Rb is measured to be 0.2167 ± 0.0011 (stat) ± 0.0013 (syst).

AB - ALEPH's published measurement of Rb = Γ(Ζ → bb̄)/Γ(Ζ → hadrons) using a lifetime tag is updated using the full LEP 1 data sample. Considerable effort has been devoted to understanding systematic effects. Charm background is better controlled by combining the lifetime tag with a tag based on the b/c hadron mass difference. Furthermore, the algorithm used to reconstruct the event primary vertex is designed so as to reduce correlations between the two hemispheres of an event. The value of Rb is measured to be 0.2167 ± 0.0011 (stat) ± 0.0013 (syst).

UR - http://www.scopus.com/inward/record.url?scp=0347702384&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0347702384&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(97)00406-1

DO - 10.1016/S0370-2693(97)00406-1

M3 - Article

AN - SCOPUS:0347702384

SN - 0370-2693

VL - 401

SP - 150

EP - 162

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 - 1-2

ER -