UvA-DARE ( Digital Academic Repository ) A precise measurement of the $ B ^ { 0 } _ { d } $ meson lifetime using a new technique
P. Abreu,W. Adam,T. Adye,I. Ajinenko,G. D. Alekseev,R. Alemany,P. P. Allport,S. Almehed,U. Amaldi,S. Amato,A. Andreazza,M. L. Andrieux,P. Antilogus,W-D. Apel,B. Åsman,J-E. Augustin,A. Augustinus,P. Baillon,P. Bambade,F. Barao,R. Barate,M. Barbi,D. Y. Bardin,A. Baroncelli,O. Barring,J. A. Barrio,W. Bartl,M. J. Bates,M. Battaglia,M. Baubillier,J. Baudot,K-H. Becks,M. Begalli,P. Beilliere,Yu. Belokopytov,K. Belous,A. C. Benvenuti,M. Berggren,D. Bertini,D. Bertrand,M. Besancon,F. Bianchi,M. Bigi,M. S. Bilenky,P. Billoir,M-A. Bizouard,D. Bloch,M. Blume,T. Bolognese,M. Bonesini,W. Bonivento,P. S. L. Booth,C. Bosio,O. Botner,E. Boudinov,B. Bouquet,C. Bourdarios,T. J. V. Bowcock,M. Bozzo,P. Branchini,K. D. Brand,T. Brenke, R. A. Brenner,C. Bricman,R. C. A. Brown,P. Bruckman,J-M. Brunet,L. Bugge,T. Buran,T. Burgsmueller,P. Buschmann,A. Buys,S. Cabrera,M. Caccia,M. Calvi,A. J. Camacho Rozas,T. Camporesi,V. Canale,M. Canepa,K. Cankocak,F. Cao,F. Carena,L. Carroll,C. Caso,M. V. Castillo Gimenez,A. Cattai,F. R. Cavallo,V. Chabaud,Ph. Charpentier,L. Chaussard,P. Checchia,G. A. Chelkov,M. Chen,R. Chierici,P. Chliapnikov,P. Chochula,V. Chorowicz,J. Chudoba,V. Cindro,P. Collins,R. Contri,E. Cortina,G. Cosme,F. Cossutti,J-H. Cowell,H. B. Crawley, D. Crennell,G. Crosetti,J. Cuevas Maestro,S. Czellar,E. Dahl-Jensen,J. Dahm,B. Dalmagne,M. Dam,G. Damgaard,P. D. Dauncey,M. Davenport,W. Da Silva,C. Defoix,A. Deghorain,G. Della Ricca,P. Delpierre,N. Demaria,A. De Angelis,W. De Boer,S. De Brabandere,C. De Clercq,C. De La Vaissiere,B. De Lotto,A. De Min,L. De Paula,C. De Saint-Jean,H. Dijkstra,L. Di Ciaccio,A. Di Diodato,F. Djama,A. Djannati,J. Dolbeau,M. Donszelmann,K. Doroba,M. Dracos,J. Drees,M. Dris,J-D. Durand,D. Edsall,R. Ehret,G. Eigen,T. Ekelof,G. Ekspong,M. Elsing,J-P. Engel,B. Erzen,M. Espirito Santo,E. Falk,D. Fassouliotis,M. Feindt,A. Ferrer,S. Fichet,T. A. Filippas,A. Firestone,P.-A. Fischer,H. Foeth,E. Fokitis,F. Fontanelli,F. Formenti,B. Franek,P. Frenkiel,D. C. Fries, A. G. Frodesen,R. Fruhwirth,F. Fulda-Quenzer,J. Fuster,A. Galloni,D. Gamba,M. Gandelman,C. Garcia,J. Garcia,C. Gaspar,U. Gasparini,Ph. Gavillet,E. N. Gazis,D. Gele,J-P. Gerber,L. Gerdyukov,R. Gokieli,B. Golob,G. Gopal,L. Gorn,M. Gorski,Yu. Gouz,V. Gracco,E. Graziani,C. Green,A. Grefrath,P. Gris,G. Grosdidier,K. Grzelak,S. Gumenyuk,P. Gunnarsson,M. Gunther,J. Guy,F. Hahn,S. Hahn,Z. Hajduk,A. Hallgren,K. Hamacher,F. J. Harris,V. Hedberg,R. Henriques,J. J. Hernandez,P. Herquet,H. Herr,T. L. Hessing,E. Higon,H. J. Hilke,T. S. Hill,S-O. Holmgren, P. J. Holt,D. Holthuizen,S. Hoorelbeke,M. Houlden,J. Hrubec,K. Huet,K. Hultqvist,J. N. Jackson,R. Jacobsson,P. Jalocha,R. Janik,Ch. Jarlskog,G. Jarlskog,P. Jarry,B. Jean-Marie,E. K. Johansson,L. Jonsson,P. Jonsson,C. Joram,P. Juillot,M. Kaiser,F. Kapusta,K. Karafasoulis,M. Karlsson,E. Karvelas,S. Katsanevas,E. C. Katsoufis, R. Keranen,Yu. Khokhlov,B. A. Khomenko,N. N. Khovanski,B. King,N. J. Kjaer,O. Klapp,H. Klein,A. Klovning,P. Kluit,B. Koene,P. Kokkinias,M. Koratzinos,K. Korcyl,V. Kostioukhine,C. Kourkoumelis,O. Kouznetsov,M. Krammer,C. Kreuter,I. Kronkvist,Z. Krumstein,W. Krupinski,P. Kubinec,W. Kucewicz,K. Kurvinen,C. Lacasta,I. Laktineh,J. W. Lamsa,L. Lanceri,D. W. Lane,P. Langefeld,V. Lapin,J-P. Laugier,R. Lauhakangas,G. Leder,F. Ledroit,V. Lefebure,C. K. Legan,R. Leitner,J. Lemonne,G. Lenzen,V. Lepeltier,T. Lesiak,J. Libby,D. Liko,R. Lindner,A. Lipniacka,I. Lippi,B. Loerstad, J. G. Loken,J. M. Lopez,D. Loukas,P. Lutz,L. Lyons,J. MacNaughton,G. Maehlum,J. R. Mahon,A. Maio,T. G. M. Malmgren,V. Malychev,F. Mandl, J. Marco,R. Marco,B. Marechal,M. Margoni,J-C. Marin,C. Mariotti,A. Markou,C. Martinez-Rivero,F. Martinez-Vidal,J. Masik,F. Matorras,C. Matteuzzi,G. Matthiae,J. Medbo,M. Merk,C. Meroni,S. Meyer,W. T. Meyer,M. Michelotto,E. Migliore,L. Mirabito,W. A. Mitaroff,U. Mjoernmark,T. Moa,R. Moeller,K. Moenig,M. R. Monge,P. Morettini,H. Mueller,K. Muenich,M. Mulders,L. M. Mundim,W. J. Murray,B. Muryn,G. Myatt,F. Naraghi,F. L. Navarria,S. Navas,K. Nawrocki,P. Negri,W. Neumann,N. Neumeister,R. Nicolaidou,B. S. Nielsen,M. Nieuwenhuizen,V. Nikolaenko,P. Niss,A. Nomerotski,A. Normand,M. Novak,W. Oberschulte-Beckmann,V. Obraztsov,A. G. Olshevski,A. Onofre,R. Orava,K. Osterberg,A. Ouraou,P. Paganini,M. Paganoni,P. Pages,H. Palka,Th. D. Papadopoulou,K. Papageorgiou,L. Pape,C. Parkes,F. Parodi,A. Passeri,M. Pegoraro,L. Peralta,H. Pernegger,M. Pernicka,A. Perrotta,C. Petridou,A. Petrolini,M. Petrovyck,H. T. Phillips,G. Piana,F. Pierre,O. Podobrin,M. E. Pol,G. Polok,P. Poropat,V. Pozdniakov,P. Privitera,N. Pukhaeva,A. Pullia,D. Radojicic,S. Ragazzi,H. Rahmani,P. N. Ratoff,A. L. Read,M. Reale,P. Rebecchi,M. Regler,D. Reid,P. B. Renton,L. K. Resvanis,F. Richard,J. Richardson,J. Ridky
semanticscholar（1997）
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摘要
From data recorded by DELPHI between 1991 and 1994, which corresponds to 3.2 million hadronic Z 0 decays, a measurement of the Bd meson lifetime, based on the inclusive reconstruction of 3520 ± 150 semileptonic decays of the type Bd → D∗+ X ` ν`, has been performed. The result is: τ (Bd) = 1.532 ± 0.041(stat.)± 0.040(syst.)ps. The contribution to the systematic uncertainty which depends on external errors is ±0.015.
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