Data di Pubblicazione:
2004
Abstract:
Data from Z decays in DELPHI have been searched for bar(B0d) --> D*+ l- bar(nu) with the D*+ decaying to D0 pi+ and D0 --> K- pi+, K- pi+ pi+ pi- or K- pi+ pi0. These events are used to measure the CKM matrix element |Vcb| and the form factor slope, rho(A1)^2: F_D*(1) |Vcb| = 0.0392 +/- 0.0018 +/- 0.0023; rho(A1)^2 = 1.32 +/- 0.15 +/- 0.33 corresponding to a branching fraction: BR(bar(B0d) --> D*+ l-bar(nu)) = (5.90 +/- 0.22 +/- 0.50)\%. Combining these and previous DELPHI measurements gives: F_D*(1)|Vcb| = 0.0377 +/- 0.0011 +/- 0.0019, rho(A1)^2 = 1.39 +/- 0.10 +/- 0.33 and BR(bar(B0d) --> D*+ l- bar(nu)) = (5.39 +/- 0.11 +/- 0.34)% Using F_D*(1) = 0.91 +/- 0.04, yields: |Vcb| = 0.0414 +/- 0.0012(stat.) +/- 0.0021(syst.) +/- 0.0018 (theory). The b-quark semileptonic branching fraction into a D*+ emitted from higher mass charmed excited states has also been measured to be: BR(b --> D*+ X l- bar(nu)) = (0.67 +/- 0.08 +/- 0.10)\%.
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 Allport; U Amaldi; N Amapane; S Amato; E Anashkin; A Andreazza; S Andringa; N Anjos; P Antilogus; WD Apel; Y Arnoud; S Ask; B Asman; E Augustin; A Augustinus; P Baillon; A Ballestrero; P Bambade; R Barbier; D Bardin; G Barker; A Baroncelli; M Battaglia; M Baubillier; KH 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; L Booth; G Borisov; O Botner; B Bouquet; V Bowcock; I Boyko; M Bracko; R Brenner; E Brodet; P Bruckman; 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; U Chung; K Cieslik; P Collins; R Contri; G Cosme; F Cossutti; J Costa; B Crawley; D Crennell; J Cuevas; J D'Hondt; J Dalmau; T da Silva; W Da Silva; G Della Ricca; A De Angelis; W Deboer; C De Clercq; B De Lotto; N De Maria; A Demin; L dePaula; L Di Ciaccio; A Di Simone; K Doroba; M Dris; G Eigen; T Ekelof; M Ellert; M Elsing; CE Santo; G Fanourakis; D Fassouliotis; M Feindt; J Fernandez; A Ferrer; F Ferro; U Flagmeyer; H Foeth; E Fokitis; F Fulda-Quenzer; J Fuster; M Gandelman; C Garcia; P Gavillet; E Gazis; R Gokieli; B Golob; G Gomez-Ceballos; P Goncalves; E Graziani; G Grosdidier; K Grzelak; J Guy; C Haag; A Hallgren; K Hamacher; K Hamilton; S Haug; F Hauler; V Hedberg; M Hennecke; H Herr; J Hoffman; SO Holmgren; J Holt; A Houlden; K Hultqvist; N Jackson; G Jarlskog; P Jarry; D Jeans; K Johansson; D Johansson; P Jonsson; C Joram; L Jungermann; F Kapusta; S Katsanevas; E Katsoufis; G Kernel; P Kersevan; U Kerzel; A Kiiskinen; T King; 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; H Lopes; M Lopez; D Loukas; P Lutz; L Lyons; J MacNaughton; A Malek; S Maltezos; F Mandl; J Marco; R Marco; B Marechal; M Margoni; JC Marin; C Mariotti; A Markou; C Martinez-Rivero; J Masik; N Mastroyiannopoulos; F Matorras; C Matteuzzi; F Mazzucato; M Mazzucato; R Mc Nulty; C Meroni; 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; P Palacios; H Palka; 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; F Pierre; M Pimenta; E Piotto; T Podobnik; V Poireau; 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; F 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; 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; C Taffard; F Tegenfeldt; J Timmermans; L Tkatchev; M Tobin; S Todorovova; B Tome; A Tonazzo; P Tortosa; P Travnicek; D Treille; G Tristram; M Trochimczuk; C Troncon; ML Turluer; A Tyapkin; P Tyapkin; S Tzamarias; V Uvarov; G Valenti; P Van Dam; J Van Eldik; A Van Lysebetten; N van Remortel; I Van Vulpen; G Vegni; F Veloso; W Venus; P Verdier; V Verzi; D Vilanova; L Vitale; V Vrba; H Wahlen; J Washbrook; C Weiser; D Wicke; J Wickens; G Wilkinson; M Winter; M Witek; O Yushchenko; A Zalewska; P Zalewski; D Zavrtanik; V Zhuravlov; I Zimin; A Zintchenko; M
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