Data di Pubblicazione:
2003
Abstract:
The production of wrong sign charmed mesons b --> (D) over bar X-(s), D-(s) = (D-0, D+, D-s), is studied using the data collected by the DELPHI experiment in the years 1994 and 1995. Charmed mesons in Z --> b (b) over bar events are exclusively reconstructed by searching for the decays D-0 --> K(-)pi(+), D+ --> K(-)pi(+)pi(+) and D-s(+) --> phipi(+) --> K(+)K(-)pi(+). The wrong sign contribution is extracted by using two discriminant variables: the charge of the b-quark at decay time, estimated from the charges of identified particles, and the momentum of the charmed meson in the rest frame of the b-hadron. The inclusive branching fractions of b-hadrons into wrong sign charm mesons are measured to be: B(b --> (D) over bar X-0) + B(b --> D-X) = (9.3 +/- 1.7(stat) +/- 1.3(syst) +/- 0.4(B))%, B(b --> Ds-X) = (10.1 +/- 1.0(stat) +/- 0.6(syst) +/- 2.8(B))% where the first error is statistical, the second and third errors are systematic. (C) 2003 Published by Elsevier Science B.V.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
J. Abdallah;P. Abreu;W. Adam;P. Adzic;T. Albrecht;T. Alderweireld;R. Alemany-Fernandez;T. Allmendinger;P. P. Allport;U. Amaldi;N. Amapane;S. Amato;E. Anashkin;A. Andreazza;S. Andringa;N. Anjos;P. Antilogus;W. D. Apel;Y. Arnoud;S. Ask;B. Asman;J. E. Augustin;A. Augustinus;P. Baillon;A. Ballestrero;P. Bambade;R. Barbiery;D. Bardin;G. Barker;A. Baroncelli;M. Battaglia;M. Baubillier;K. H. Becks;M. Begalli;A. Behrmann;E. Ben-Haim;N. Benekos;A. Benvenuti;C. Berat;M. Berggren;L. Berntzon;D. Bertrand;M. Besancon;N. Besson;D. Bloch;M. Blom;M. Bluj;M. Bonesini;M. Boonekamp;P. S. L.;G. Borisov;O. Botner;B. Bouquet;T. J. V.;I. Boyko;M. Bracko;R. Brenner;E. Brodet;P. Bruckman;J. M. Brunet;L. Bugge;P. Buschmann;M. Calvi;T. Camporesi;V. Canale;F. Carena;N. Castro;F. Cavallo;M. Chapkin;P. Charpentier;P. Checchia;R. Chierici;P. Chliapnikov;J. Chudoba;S. U. Chung;K. Cieslik;P. Collins;R. Contri;G. Cosme;F. Cossutti;M. J. Costa;B. Crawley;D. Crennell;J. Cuevas;J. D'Hondt;J. Dalmau;T. d. Silva;W. D. Silva;G. D. Ricca;A. D. Angelis;W. D. Boer;C. D. Clercq;B. D. Lotto;N. D. Maria;A. D. Min;L. d. Paula;L. D. Ciaccio;A. D. Simone;K. Doroba;J. Drees;M. Dris;G. Eigen;T. Ekelof;M. Ellert;M. Elsing;M. C. E.;G. Fanourakis;D. Fassouliotis;M. Feindt;J. Fernandez;A. Ferrer;R. Ferro;U. Flagmeyer;H. Foeth;E. Fokitis;F. Fulda-Quenzer;J. Fuster;M. Gandelman;C. Garcia;P. Gavillet;E. Gazis;T. Geralis;R. Gokieli;B. Golob;G. Gomez-Ceballos;P. Goncalves;E. Graziani;G. Grosdider;K. Grzelak;J. Guy;C. Haag;A. Hallgren;K. Hamacher;K. Hamilton;J. Hansen;S. Haug;R. Hauler;V. Hedberg;M. Hennecke;H. Herr;J. Hoffman;S. O. Holmgren;P. J. Holt;M. A. Houlden;K. Hultqvist;J. N. Jackson;G. Jarlskog;P. Jarry;D. Jeans;E. K. Johansson;P. D. Johansson;P. Jonsson;C. Joram;L. Jungermann;F. Kapusta;S. Katsanevas;E. Katsoufis;G. Kernel;B. P. Kersevan;A. Kiiskinen;B. T. King;N. J. Kjaer;P. Kluit;P. Kokkinias;C. Kourkoumelis;O. Kouznetsov;Z. Krumstein;M. Kucharczyk;J. Lamsa;G. Leder;F. Ledroit;L. Leinonen;R. Leitner;J. Lemonne;V. Lepeltier;T. Lesiak;W. Liebig;D. Liko;A. Lipniacka;J. H. Lopes;J. M. Lopez;D. Loukas;P. Lutz;L. Lyons;J. MacNaughton;A. Malek;S. Maltezos;E. Mandl;J. Marco;R. Marco;B. Marechal;M. Margoni;J. C. Marin;C. Mariotti;A. Markou;C. Martinez-Rivero;J. Masik;N. Mastroyiannopoulos;F. Matorras;C. Matteuzzi;F. Mazzucato;M. Mazzucato;R. M. Nulty;C. Meroni;W. T. Meyer;E. Migliore;W. Mitaroff;U. Mjoernmark;T. Moa;M. Moch;K. Moenig;R. Monge;J. Montenegro;D. Moraes;S. Moreno;P. Morettini;U. Mueller;K. Muenich;M. Mulders;L. Mundim;W. Murray;B. Muryn;G. Myatt;T. Myklebust;M. Nassiakou;F. Navarria;K. Nawrocki;R. Nicolaidou;M. Nikolenko;A. Oblakowska-Mucha;V. Obraztsov;A. Olshevski;A. Onofre;R. Orava;K. Osterberg;A. Ouraou;A. Oyanguren;M. Paganoni;S. Paiano;J. P. Palacios;H. Palka;T. D. Papadopoulou;L. Pape;C. Parkes;F. Parodi;U. Parzefall;A. Passeri;O. Passon;L. Peralta;V. Perepelitsa;A. Perrotta;A. Petrolini;J. Piedra;L. Pieri;R. Pierre;M. Pimenta;E. Piotto;T. Podobnik;V. Poireau;M. E. Pol;G. Polok;P. Poropat;V. Pozdniakov;N. Pukhaeva;A. Pullia;J. Rames;L. Ramler;A. Read;P. Rebecchi;J. Rehn;D. Reid;R. Reinhardt;P. Renton;R. Richard;J. Ridky;M. Rivero;D. Rodriguez;A. Romero;P. Ronchese;E. Rosenberg;P. Roudeau;T. Rovelli;V. Ruhlmann-Kleider;D. Ryabtchikov;A. Sadovsky;L. Salmi;J. Salt;A. Savoy-Navarro;U. Schwickerath;C. Schwanda;A. Segar;R. Sekulin;M. Siebel;A. Sisakian;G. Smadja;O. Smirnova;A. Sokolov;A. Sopczak;R. Sosnowski;T. Spassov;M. Stanitzki;A. Stocchi;J. Strauss;B. Stugu;M. Szczekowski;M. Szeptycka;T. Szumlak;T. Tabarelli;A. C. Taffard;E. Tegenfeldt;J. Timmermans;L. Tkatchev;M. Tobin;S. Todorovova;A. Tomaradze;B. Tome;A. Tonazzo;P. Tortosa;P. Travnicek;D. Treille;
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