An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991-1993 runs of ALEPH, with the silicon vertex detector fully operational, This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 +/- 0.013 +/- 0.022 ps.

A precise measurement of the average b hadron lifetime / D. Buskulic;I. DeBonis;D. Casper;D. Decamp;P. Ghez;C. Goy;J. P. Lees;A. Lucotte;M. N. Minard;P. Odier;B. Pietrzyk;F. Ariztizabal;M. Chmeissani;J. M. Crespo;I. Efthymiopoulos;E. Fernandez;M. FernandezBosman;V. Gaitan;S. Orteu;A. Pacheco;C. Padilla;F. Palla;A. Pascual;F. Teubert;A. Colaleo;D. Creanza;M. dePalma;A. Farilla;G. Gelao;M. Girone;G. Iaselli;G. Maggi;M. Maggi;N. Marinelli;S. Natali;S. Nuzzo;A. Ranieri;G. Raso;F. Romano;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;G. Bonvicini;M. Cattaneo;P. Comas;P. Coyle;H. Drevermann;R. W. Forty;M. Frank;R. Hagelberg;J. Harvey;R. Jacobsen;P. Janot;B. Jost;J. Knobloch;I. Lehraus;C. Markou;R. Miquel;T. Oest;P. Palazzi;J. R. Pater;E. B. Martin;P. Mato;A. Minten;J. F. Pusztaszeri;F. Ranjard;P. Rensing;L. Rolandi;D. Schlatter;M. Schmelling;O. Schneider;W. Tejessy;I. R. Tomalin;A. Venturi;H. Wachsmuth;W. Wiedenmann;T. Wildish;W. Witzeling;J. Wotschack;Z. Ajaltouni;C. Boyer;A. Falvard;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J. C. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;J. M. Rossignol;F. Saadi;T. Fearnley;J. B. Hansen;J. D. Hansen;J. R. Hansen;P. H. Hansen;B. S. Nilsson;A. Kyriakis;E. Simopoulou;I. Siotis;A. Vayaki;K. Zachariadou;A. Blondel;G. Bonneaud;J. C. Brient;P. Bourdon;L. Passalacqua;A. Rouge;M. Rumpf;R. Tanaka;A. Valassi;M. Verderi;H. Videau;D. J. Candlin;M. I. Parsons;E. Focardi;G. Parrini;M. Corden;M. Delfino;C. Georgiopoulos;D. E. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G. P. Murtas;M. PepeAltarelli;S. J. Dorris;A. W. Halley;I. tenHave;I. G. Knowles;J. G. Lynch;W. T. Morton;V. OShea;C. Raine;P. Reeves;J. M. Scarr;K. Smith;M. G. Smith;A. S. Thompson;F. Thomson;S. Thorn;R. M. Turnbull;U. Becker;O. Braun;C. Geweniger;G. Graefe;P. Hanke;V. Hepp;E. E. Kluge;A. Putzer;B. Rensch;M. Schmidt;J. Sommer;H. Stenzel;K. Tittel;S. Werner;M. Wunsch;D. Abbaneo;R. Beuselinck;D. M. Binnie;W. Cameron;D. J. Colling;P. J. Dornan;N. Konstantinidis;L. Moneta;A. Moutoussi;J. Nash;G. SanMartin;J. K. Sedgbeer;A. M. Stacey;G. Dissertori;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;C. K. Bowdery;T. J. Brodbeck;P. Colrain;G. Crawford;A. J. Finch;F. Foster;G. Hughes;T. Sloan;E. P. Whelan;M. I. Williams;A. Galla;A. M. Greene;K. Kleinknecht;G. Quast;J. Raab;B. Renk;H. G. Sander;P. vanGemmeren;R. Wanke;C. Zeitnitz;J. J. Aubert;A. M. Bencheikh;C. Benchouk;A. Bonissent;G. Bujosa;D. Calvet;J. Carr;C. Diaconu;F. Etienne;D. Nicod;P. Payre;D. Rousseau;M. Talby;M. Thulasidas;I. Abt;R. Assmann;C. Bauer;W. Blum;D. Brown;H. Dietl;F. Dydak;G. Ganis;C. Gotzhein;K. Jakobs;H. Kroha;G. Lutjens;G. Lutz;W. Manner;H. G. Moser;R. Richter;A. RosadoSchlosser;S. Schael;R. Settles;H. Seywerd;U. Stierlin;R. StDenis;G. Wolf;R. Alemany;J. Boucrot;O. Callot;A. Cordier;F. Courault;M. Davier;L. Duflot;J. F. Grivaz;P. Heusse;M. Jacquet;D. W. Kim;F. LeDiberder;J. Lefrancois;A. M. Lutz;G. Musolino;I. Nikolic;H. J. Park;I. C. Park;M. H. Schune;S. Simion;J. J. Veillet;I. Videau;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;C. Bozzi;G. Calderini;M. Carpinelli;M. A. Ciocci;V. Ciulli;R. DellOrso;R. Fantechi;I. Ferrante;L. Foa;F. Forti;A. Giassi;M. A. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P. S. Marrocchesi;A. Messineo;G. Rizzo;G. Sanguinetti;A. Sciaba;P. Spagnolo;J. Steinberger;R. Tenchini;G. Tonelli;G. Triggiani;C. Vannini;P. G. Verdini;J. Walsh;A. P. Betteridge;G. A. Blair;L. M. Bryant;F. Cerutti;Y. Gao;M. G. Green;D. L. Johnson;T. Medcalf;L. M. Mir;P. Perrodo;J. A. Strong;V. Bertin;D. R. Botterill;R. W. Clifft;T. R. Edgecock;S. Haywood;M. Edwards;P. Maley;P. R. Norton;J. C. Thompson;B. BlochDevaux;P. Colas;H. Duarte;S. Emery;W. Kozanecki;E. Lancon;M. C. Lemaire;E. Locci;B. Marx;P. Perez;J. Rander;J. F. Renardy;A. Rosowsky;A. Roussarie;J. P. Schuller;J. Schwindling;D. SiMohand;A. Trabelsi;B. Vallage;R. P. Johnson;H. Y. Kim;A. M. Litke;M. A. McNeil;G. Taylor;A. Beddall;C. N. Booth;R. Boswell;S. Cartwright;F. Combley;I. Dawson;A. Koksal;M. Letho;W. M. Newton;C. Rankin;L. F. Thompson;A. Bohrer;S. Brandt;G. Cowan;E. Feigl;C. Grupen;G. Lutters;J. MinguetRodriguez;F. Rivera;P. Saraiva;L. Smolik;F. Stephan;M. Apollonio;L. Bosisio;R. DellaMarina;G. Giannini;B. Gobbo;F. Ragusa;J. Rothberg;S. Wasserbaech;S. R. Armstrong;L. Bellantoni;P. Elmer;Z. Feng;D. P. S.;Y. S. Gao;S. Gonzalez;J. Grahl;J. L. Harton;O. J. Hayes;H. Hu;P. A. McNamara;J. M. Nachtman;W. Orejudos;Y. B. Pan;Y. Saadi;M. Schmitt;I. J. Scott;V. Sharma;J. D. Turk;A. M. Walsh;S. L. Wu;X. Wu;J. M. Yamartino;M. Zheng;G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 369:(1996), pp. 151-162. [10.1016/0370-2693(95)01586-8]

A precise measurement of the average b hadron lifetime

FOCARDI, ETTORE;CIULLI, VITALIANO;
1996

Abstract

An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991-1993 runs of ALEPH, with the silicon vertex detector fully operational, This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 +/- 0.013 +/- 0.022 ps.
1996
369
151
162
D. Buskulic;I. DeBonis;D. Casper;D. Decamp;P. Ghez;C. Goy;J. P. Lees;A. Lucotte;M. N. Minard;P. Odier;B. Pietrzyk;F. Ariztizabal;M. Chmeissani;J. M. Crespo;I. Efthymiopoulos;E. Fernandez;M. FernandezBosman;V. Gaitan;S. Orteu;A. Pacheco;C. Padilla;F. Palla;A. Pascual;F. Teubert;A. Colaleo;D. Creanza;M. dePalma;A. Farilla;G. Gelao;M. Girone;G. Iaselli;G. Maggi;M. Maggi;N. Marinelli;S. Natali;S. Nuzzo;A. Ranieri;G. Raso;F. Romano;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;G. Bonvicini;M. Cattaneo;P. Comas;P. Coyle;H. Drevermann;R. W. Forty;M. Frank;R. Hagelberg;J. Harvey;R. Jacobsen;P. Janot;B. Jost;J. Knobloch;I. Lehraus;C. Markou;R. Miquel;T. Oest;P. Palazzi;J. R. Pater;E. B. Martin;P. Mato;A. Minten;J. F. Pusztaszeri;F. Ranjard;P. Rensing;L. Rolandi;D. Schlatter;M. Schmelling;O. Schneider;W. Tejessy;I. R. Tomalin;A. Venturi;H. Wachsmuth;W. Wiedenmann;T. Wildish;W. Witzeling;J. Wotschack;Z. Ajaltouni;C. Boyer;A. Falvard;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J. C. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;J. M. Rossignol;F. Saadi;T. Fearnley;J. B. Hansen;J. D. Hansen;J. R. Hansen;P. H. Hansen;B. S. Nilsson;A. Kyriakis;E. Simopoulou;I. Siotis;A. Vayaki;K. Zachariadou;A. Blondel;G. Bonneaud;J. C. Brient;P. Bourdon;L. Passalacqua;A. Rouge;M. Rumpf;R. Tanaka;A. Valassi;M. Verderi;H. Videau;D. J. Candlin;M. I. Parsons;E. Focardi;G. Parrini;M. Corden;M. Delfino;C. Georgiopoulos;D. E. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G. P. Murtas;M. PepeAltarelli;S. J. Dorris;A. W. Halley;I. tenHave;I. G. Knowles;J. G. Lynch;W. T. Morton;V. OShea;C. Raine;P. Reeves;J. M. Scarr;K. Smith;M. G. Smith;A. S. Thompson;F. Thomson;S. Thorn;R. M. Turnbull;U. Becker;O. Braun;C. Geweniger;G. Graefe;P. Hanke;V. Hepp;E. E. Kluge;A. Putzer;B. Rensch;M. Schmidt;J. Sommer;H. Stenzel;K. Tittel;S. Werner;M. Wunsch;D. Abbaneo;R. Beuselinck;D. M. Binnie;W. Cameron;D. J. Colling;P. J. Dornan;N. Konstantinidis;L. Moneta;A. Moutoussi;J. Nash;G. SanMartin;J. K. Sedgbeer;A. M. Stacey;G. Dissertori;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;C. K. Bowdery;T. J. Brodbeck;P. Colrain;G. Crawford;A. J. Finch;F. Foster;G. Hughes;T. Sloan;E. P. Whelan;M. I. Williams;A. Galla;A. M. Greene;K. Kleinknecht;G. Quast;J. Raab;B. Renk;H. G. Sander;P. vanGemmeren;R. Wanke;C. Zeitnitz;J. J. Aubert;A. M. Bencheikh;C. Benchouk;A. Bonissent;G. Bujosa;D. Calvet;J. Carr;C. Diaconu;F. Etienne;D. Nicod;P. Payre;D. Rousseau;M. Talby;M. Thulasidas;I. Abt;R. Assmann;C. Bauer;W. Blum;D. Brown;H. Dietl;F. Dydak;G. Ganis;C. Gotzhein;K. Jakobs;H. Kroha;G. Lutjens;G. Lutz;W. Manner;H. G. Moser;R. Richter;A. RosadoSchlosser;S. Schael;R. Settles;H. Seywerd;U. Stierlin;R. StDenis;G. Wolf;R. Alemany;J. Boucrot;O. Callot;A. Cordier;F. Courault;M. Davier;L. Duflot;J. F. Grivaz;P. Heusse;M. Jacquet;D. W. Kim;F. LeDiberder;J. Lefrancois;A. M. Lutz;G. Musolino;I. Nikolic;H. J. Park;I. C. Park;M. H. Schune;S. Simion;J. J. Veillet;I. Videau;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;C. Bozzi;G. Calderini;M. Carpinelli;M. A. Ciocci;V. Ciulli;R. DellOrso;R. Fantechi;I. Ferrante;L. Foa;F. Forti;A. Giassi;M. A. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P. S. Marrocchesi;A. Messineo;G. Rizzo;G. Sanguinetti;A. Sciaba;P. Spagnolo;J. Steinberger;R. Tenchini;G. Tonelli;G. Triggiani;C. Vannini;P. G. Verdini;J. Walsh;A. P. Betteridge;G. A. Blair;L. M. Bryant;F. Cerutti;Y. Gao;M. G. Green;D. L. Johnson;T. Medcalf;L. M. Mir;P. Perrodo;J. A. Strong;V. Bertin;D. R. Botterill;R. W. Clifft;T. R. Edgecock;S. Haywood;M. Edwards;P. Maley;P. R. Norton;J. C. Thompson;B. BlochDevaux;P. Colas;H. Duarte;S. Emery;W. Kozanecki;E. Lancon;M. C. Lemaire;E. Locci;B. Marx;P. Perez;J. Rander;J. F. Renardy;A. Rosowsky;A. Roussarie;J. P. Schuller;J. Schwindling;D. SiMohand;A. Trabelsi;B. Vallage;R. P. Johnson;H. Y. Kim;A. M. Litke;M. A. McNeil;G. Taylor;A. Beddall;C. N. Booth;R. Boswell;S. Cartwright;F. Combley;I. Dawson;A. Koksal;M. Letho;W. M. Newton;C. Rankin;L. F. Thompson;A. Bohrer;S. Brandt;G. Cowan;E. Feigl;C. Grupen;G. Lutters;J. MinguetRodriguez;F. Rivera;P. Saraiva;L. Smolik;F. Stephan;M. Apollonio;L. Bosisio;R. DellaMarina;G. Giannini;B. Gobbo;F. Ragusa;J. Rothberg;S. Wasserbaech;S. R. Armstrong;L. Bellantoni;P. Elmer;Z. Feng;D. P. S.;Y. S. Gao;S. Gonzalez;J. Grahl;J. L. Harton;O. J. Hayes;H. Hu;P. A. McNamara;J. M. Nachtman;W. Orejudos;Y. B. Pan;Y. Saadi;M. Schmitt;I. J. Scott;V. Sharma;J. D. Turk;A. M. Walsh;S. L. Wu;X. Wu;J. M. Yamartino;M. Zheng;G. Zobernig
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