The full statistics of hadronic Z decays collected with the ALEPH detector are analysed to measure, by three methods, the ratio, , of the partial decay width of the Z into quarks to the total hadronic width. One method uses the inclusive and spectra of electrons. The other two use a double-tagging technique to measure independently of the charm-tagging efficiency. In one, the tagging procedure uses the reconstruction of high momentum charmed mesons (, and to detect the charm quarks. In the other, a charm quark is tagged from the 's reconstructed in the decay channel and the other from the slow pion from the decay. The combination of these measurements leads to .

Measurement of the fraction of hadronic Z decays into charm quark pairs / R. Barate;D. Buskulic;D. Decamp;P. Ghez;C. Goy;J. P. Lees;A. Lucotte;E. Merle;M. N. Minard;J. Y. Nief;B. Pietrzyk;R. Alemany;G. Boix;M. P. Casado;M. Chmeissani;J. M. Crespo;M. Delfino;E. Fernandez;M. Fernandez-Bosman;L. Garrido;E. Grauges;A. Juste;M. Martinez;G. Merino;R. Miquel;L. M. Mir;I. C. Park;A. Pascual;J. A. Perlas;I. Riu;F. Sanchez;A. Colaleo;D. Creanza;M. d. Palma;G. Gelao;G. Iaselli;G. Maggi;M. Maggi;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;U. Becker;P. Bright-Thomas;D. Casper;M. Cattaneo;V. Ciulli;G. Dissertori;H. Drevermann;R. W. Forty;M. Frank;R. Hagelberg;J. B. Hansen;J. Harvey;P. Janot;B. Jost;I. Lehraus;P. Mato;A. Minten;L. Moneta;A. Pacheco;J. F. Pusztaszeri;F. Ranjard;L. Rolandi;D. Rousseau;D. Schlatter;M. Schmitt;O. Schneider;W. Tejessy;F. Teubert;I. R. Tomalin;H. Wachsmuth;A. Wagner;Z. Ajaltouni;F. Badaud;G. Chazelle;O. Deschamps;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. D. Hansen;J. R. Hansen;P. H. Hansen;B. S. Nilsson;B. Rensch;A. Waananen;G. Daskalakis;A. Kyriakis;C. Markou;E. Simopoulou;I. Siotis;A. Vayaki;A. Blondel;G. Bonneaud;J. C. Brient;P. Bourdon;A. Rouge;M. Rumpf;A. Valassi;M. Verderi;H. Videau;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;F. Cerutti;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G. P. Murtas;L. Passalacqua;M. Pepe-Altarelli;L. Curtis;A. W. Halley;J. G. Lynch;P. Negus;V. O'Shea;C. Raine;J. M. Scarr;K. Smith;P. Teixeira-Dias;A. S. Thompson;E. Thomson;O. Buchmuller;S. Dhamotharan;C. Geweniger;G. Graefe;P. Hanke;G. Hansper;V. Hepp;E. E. Kluge;A. Putzer;J. Sommer;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D. M. Binnie;W. Cameron;P. J. Dornan;M. Girone;S. Goodsir;E. B. Martin;N. Marinelli;A. Moutoussi;J. Nash;J. K. Sedgbeer;P. Spagnolo;M. D. Williams;V. M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;A. P. Betteridge;C. K. Bowdery;P. G. Buck;P. Colrain;G. Crawford;A. J. Finch;F. Foster;G. Hughes;R. W. L.;M. I. Williams;I. Giehl;A. M. Greene;C. Hoffmann;K. Jakobs;K. Kleinknecht;G. Quast;B. Renk;E. Rohne;H. G. Sander;P. v. Gemmeren;C. Zeitnitz;J. J. Aubert;C. Benchouk;A. Bonissent;G. Bujosa;J. Carr;P. Coyle;F. Etienne;O. Leroy;F. Motsch;P. Payre;M. Talby;A. Sadouki;M. Thulasidas;K. Trabelsi;M. Aleppo;M. Antonelli;F. Ragusa;R. Berlich;W. Blum;V. Buscher;H. Dietl;G. Ganis;H. Kroha;G. Lutjens;C. Mannert;W. Manner;H. G. Moser;S. Schael;R. Settles;H. Seywerd;H. Stenzel;W. Wiedenmann;G. Wolf;J. Boucrot;O. Callot;S. Chen;A. Cordier;M. Davier;L. Duflot;J. F. Grivaz;P. Heusse;A. Hocker;A. Jacholkowska;D. W. Kim;F. L. Diberder;J. Lefranccois;A. M. Lutz;M. H. Schune;E. Tournefier;J. J. Veillet;I. Videau;D. Zerwas;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;T. Boccali;C. Bozzi;G. Calderini;M. Carpinelli;M. A. Ciocci;R. Dell'Orso;R. Fantechi;I. Ferrante;L. Foa;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. Sciaba;R. Tenchini;G. Tonelli;C. Vannini;A. Venturi;P. G. Verdini;G. A. Blair;L. M. Bryant;J. T. Chambers;M. G. Green;T. Medcalf;P. Perrodo;J. A. Strong;J. H. von;D. R. Botterill;R. W. Clifft;T. R. Edgecock;S. Haywood;P. R. Norton;J. C. Thompson;A. E. Wright;B. Bloch-Devaux;P. Colas;S. Emery;W. Kozanecki;E. Lanccon;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;N. Konstantinidis;A. M. Litke;M. A. McNeil;G. Taylor;C. N. Booth;C. A. J.;S. Cartwright;F. Combley;M. S. Kelly;M. Lehto;J. Reeve;L. F. Thompson;K. Affholderbach;A. Bohrer;S. Brandt;G. Cowan;C. Grupen;P. Saraiva;L. Smolik;F. Stephan;M. Apollonio;L. Bosisio;R. D. Marina;G. Giannini;B. Gobbo;G. Musolino;J. Rothberg;S. Wasserbaech;S. R. Armstrong;E. Charles;P. Elmer;D. P. S.;Y. Gao;S. Gonzalez;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;G. Zobernig. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - ELETTRONICO. - 4:(1998), pp. 557-570. [10.1007/s100529800939]

Measurement of the fraction of hadronic Z decays into charm quark pairs

FOCARDI, ETTORE;CIULLI, VITALIANO;
1998

Abstract

The full statistics of hadronic Z decays collected with the ALEPH detector are analysed to measure, by three methods, the ratio, , of the partial decay width of the Z into quarks to the total hadronic width. One method uses the inclusive and spectra of electrons. The other two use a double-tagging technique to measure independently of the charm-tagging efficiency. In one, the tagging procedure uses the reconstruction of high momentum charmed mesons (, and to detect the charm quarks. In the other, a charm quark is tagged from the 's reconstructed in the decay channel and the other from the slow pion from the decay. The combination of these measurements leads to .
1998
4
557
570
R. Barate;D. Buskulic;D. Decamp;P. Ghez;C. Goy;J. P. Lees;A. Lucotte;E. Merle;M. N. Minard;J. Y. Nief;B. Pietrzyk;R. Alemany;G. Boix;M. P...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/638890
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