Production rate and decay lifetime measurements ofBs0 mesons at LEP usingDs andϕ mesons
P. Abreu,W. Adam,T. Adye,E. Agasi,R. Aleksan,G. D. Alekseev,A. Algeri,S. Almehed,S. J. Alvsvaag,U. Amaldi,A. Andreazza,P. Antilogus,W.-D. Apel,R. J. Apsimon,Y. Arnoud,B. Åsman,J.-E. Augustin,A. Augustinus,P. Baillon,P. Bambade,F. Barao,R. Barate,G. Barbiellini,D. Y. Bardin,G. J. Barker,A. Baroncelli,O. Barring,J. A. Barrio,M. J. Bates,M. Battaglia,M. Baubillier,K.-H. Becks,M. Begalli,P. Beilliere,Yu. Belokopytov,P. Beltran,D. Benedic,A. C. Benvenuti,M. Berggren,D. Bertrand,F. Bianchi,M. Bigi,M. S. Bilenky,P. Billoir,J. Bjarne,D. Bloch,J. Blocki,S. Blyth,V. Bocci,P. N. Bogolubov,T. Bolognese,M. Bonesini,W. Bonivento,P. S. L. Booth,G. Borisov,H. Borner,C. Bosio,B. Bostjancic,S. Bosworth,O. Botner,B. Bouquet,C. Bourdarios,T. J. V. Bowcock,M. Bozzo,S. Braibant,P. Branchini,K. D. Brand,R. A. Brenner,H. Briand,C. Bricman,L. Brillaut,R. C. A. Brown,J.-M. Brunet,A. Budziak,L. Bugge,T. Buran,H. Burmeister,A. Buys,J. A. M. A. Buytaert,M. Caccia,M. Calvi,A. J. Camacho Rozas,R. Campion,T. Camporesi,V. Canale,K. Cankocak,F. Cao,F. Carena,L. Carroll,C. Caso,M. V. Castillo Gimenez,A. Cattai,F. R. Cavallo,L. Cerrito,V. Chabaud,A. Chan,M. Chapkin,Ph. Charpentier,L. Chaussard,J. Chauveau,P. Checchia,G. A. Chelkov,L. Chevalier,P. Chliapnikov,V. Chorowicz,J. T. M. Chrin,V. Cindro,P. Collins,J. L. Contreras,R. Contri,E. Cortina,G. Cosme,F. Couchot,H. B. Crawley, D. Crennell,G. Crosetti,J. Cuevas Maestro,S. Czellar,E. Dahl-Jensen,J. Dahm,B. Dalmagne,M. Dam,G. Damgaard,E. Daubie,A. Daum,P. D. Dauncey,M. Davenport,J. Davies,W. Da Silva,C. Defoix,P. Delpierre,N. Demaria,A. De Angelis,H. De Boeck,W. De Boer,S. De Brabandere,C. De Clerq,M. D. M. De Fez Laso,C. De La Vaissiere,B. De Lotto,A. De Min,H. Dijkstra,L. Di Ciaccio,J. Dolbeau,M. Donszelmann,K. Doroba,M. Dracos,J. Drees,M. Dris,Y. Dufour,F. Dupont,D. Edsall,L.-O. Eek,P. A.-M. Eerola,R. Ehret,T. Ekelof,G. Ekspong,A. Elliot Peisert,M. Elsing,J.-P. Engel,N. Ershaidat,M. Espirito Santo,D. Fassouliotis,M. Feindt,A. Ferrer,T. A. Filippas,A. Firestone,H. Foeth,E. Fokitis,F. Fontanelli,K. A. J. Forbes,J.-L. Fousset,S. Francon,B. Franek,P. Frenkiel,D. C. Fries,A. G. Frodesen,R. Fruhwirth,F. Fulda-Quenzer,H. Furstenau,J. Fuster,D. Gamba,C. Garcia,J. Garcia,C. Gaspar,U. Gasparini,Ph. Gavillet,E. N. Gazis,J.-P. Gerber,P. Giacomelli,D. Gillespie,R. Gokieli,B. Golob,V. M. Golovatyuk,J. J. Gomez Y Cadenas,G. Gopal,L. Gorn,M. Gorski,V. Gracco,A. Grant,F. Grard,E. Graziani,G. Grosdidier,E. Gross,B. Grossetete,P. Gunnarsson,J. Guy,U. Haedinger,F. Hahn,M. Hahn,S. Hahn,S. Haider,Z. Hajduk,A. Hakansson,A. Hallgren,K. Hamacher,G. Hamel De Monchenault,W. Hao,F. J. Harris,V. Hedberg,T. Henkes,R. Henriques,J. J. Hernandez,J. A. Hernando,P. Herquet,H. Herr,T. L. Hessing,I. Hietanen,C. O. Higgins,E. Higon,H. J. Hilke,T. S. Hill,S. D. Hodgson,T. Hofmokl,S.-O. Holmgren,P. J. Holt,D. Holthuizen,P. F. Honore,M. Houlden,J. Hrubec,K. Huet,K. Hultqvist,P. Ioannou,P.-S. Iversen,J. N. Jackson,R. Jacobsson,P. Jalocha,G. Jarlskog,P. Jarry,B. Jean-Marie,E. K. Johansson,M. Jonker,L. Jonsson,P. Juillot,G. Kalkanis,G. Kalmus,F. Kapusta,M. Karlsson,E. Karvelas,S. Katsanevas,E. C. Katsoufis, R. Keranen,B. A. Khomenko,N. N. Khovanski,B. King,N. J. Kjaer,H. Klein,A. Klovning,P. Kluit,A. Koch-Mehrin,J. H. Koehne,B. Koene,P. Kokkinias,M. Koratzinos,K. Korcyl,A. V. Korytov,V. Kostioukhine,C. Kourkoumelis,O. Kouznetsov,P. H. Kramer,M. Krammer,C. Kreuter,J. Krolikowski,I. Kronkvist,W. Kucewicz,K. Kulka,K. Kurvinen,C. Lacasta,C. Lambropoulos,J. W. Lamsa,L. Lanceri,P. Langefeld,V. Lapin,I. Last,J.-P. Laugier,R. Lauhakangas,G. Leder,F. Ledroit,R. Leitner,Y. Lemoigne,J. Lemonne, G. Lenzen,V. Lepeltier,T. Lesiak,J. M. Levy,E. Lieb,D. Liko,J. Lindgren,R. Lindner,I. Lippi,B. Loerstad,M. Lokajicek, J. G. Loken,A. Lopez-Fernandez,M. A. Lopez Aguera,M. Los,D. Loukas,J. J. Lozano,P. Lutz,L. Lyons,G. Maehlum,J. Maillard,A. Maio,A. Maltezos,F. Mandl,J. Marco,M. Margoni,J.-C. Marin,A. Markou,T. Maron,S. Marti,C. Martinez-Rivero,F. Martinez-Vidal,F. Matorras,C. Matteuzzi,G. Matthiae,M. Mazzucato,M. Mc Cubbin,R. McKay,R. McNulty,J. Medbo,C. Meroni,W. T. Meyer,M. Michelotto,I. Mikulec,L. Mirabito,W. A. Mitaroff,G. V. Mitselmakher,U. Mjoernmark,T. Moa,R. Moeller,K. Moenig,M. R. Monge,P. Morettini,H. Mueller,W. J. Murray,G. Myatt,F. L. Navarria,P. Negri,S. Nemecek,W. Neumann, R. Nicolaidou,B. S. Nielsen,B. Nijjhar,V. Nikolaenko,P. E. S. Nilsen,P. Niss,A. Nomerotski,V. Obraztsov,A. G. Olshevski,R. Orava,A. Ostankov,K. Osterberg,A. Ouraou,M. Paganoni,R. Pain,H. Palka,Th. D. Papadopoulou,L. Pape,F. Parodi,A. Passeri,M. Pegoraro,J. Pennanen,L. Peralta,V. Perevozchikov,H. Pernegger,M. Pernicka,A. Perrotta,C. Petridou,A. Petrolini,G. Piana,F. Pierre,M. Pimenta,S. Plaszczynski,O. Podobrin,M. E. Pol,G. Polok,P. Poropat,V. Pozdniakov,P. Privitera,A. Pullia,D. Radojicic,S. Ragazzi,H. Rahmani,J. Rames,P. N. Ratoff,A. L. Read,M. Reale,P. Rebecchi,N. G. Redaelli,M. Regler,D. Reid,P. B. Renton,L. K. Resvanis,F. Richard,J. Richardson,J. Ridky,G. Rinaudo,I. Roditi,A. Romero,I. Roncagliolo,P. Ronchese,C. Ronnqvist,E. I. Rosenberg,E. Rosso,T. Rovelli,W. Ruckstuhl,V. Ruhlmann-Kleider,A. Ruiz,H. Saarikko,Y. Sacquin,G. Sajot,J. Salt,J. Sanchez,M. Sannino,S. Schael,H. Schneider,M. A. E. Schyns,G. Sciolla,F. Scuri,A. M. Segar,A. Seitz,R. Sekulin,M. Sessa,R. Seufert,R. C. Shellard,I. Siccama,P. Siegrist,S. Simonetti,F. Simonetto,A. N. Sisakian,G. Skjevling,G. Smadja,N. Smirnov,O. Smirnova,G. R. Smith,R. Sosnowski,D. Souza-Santos,T. Spassoff,E. Spiriti,S. Squarcia,H. Staeck,C. Stanescu,S. Stapnes,G. Stavropoulos,F. Stichelbaut,A. Stocchi,J. Strauss,J. Straver,R. Strub,B. Stugu,M. Szczekowski,M. Szeptycka,P. Szymanski,T. Tabarelli,O. Tchikilev,G. E. Theodosiou,A. Tilquin,J. Timmermans,V. G. Timofeev,L. G. Tkatchev,T. Todorov,D. Z. Toet,O. Toker,A. Tomaradze,B. Tome,E. Torassa,L. Tortora,D. Treille,W. Trischuk,G. Tristram,C. Troncon,A. Tsirou,E. N. Tsyganov,M.-L. Turluer,T. Tuuva,I. A. Tyapkin,M. Tyndel,S. Tzamarias,B. Ueberschaer,S. Ueberschaer,O. Ullaland,V. Uvarov,G. Valenti,E. Vallazza,J. A. Valls Ferrer,C. Vander Velde,G. W. Van Apeldoorn,P. Van Dam,M. Van Der Heijden,W. K. Van Doninck,J. Van Eldik,P. Vaz,G. Vegni,L. Ventura,W. Venus,F. Verbeure,M. Verlato,L. S. Vertogradov,D. Vilanova,P. Vincent,L. Vitale,E. Vlasov,A. S. Vodopyanov,M. Vollmer,M. Voutilainen,V. Vrba,H. Wahlen,C. Walck,F. Waldner,A. Wehr,M. Weierstall,P. Weilhammer,A. M. Wetherell,J. H. Wickens,M. Wielers,G. R. Wilkinson,W. S. C. Williams,M. Winter,M. Witek,G. Wormser,K. Woschnagg,A. Zaitsev,A. Zalewska,P. Zalewski,D. Zavrtanik,E. Zevgolatakos,N. I. Zimin,M. Zito,D. Zontar,R. Zuberi,G. Zumerle,J. Zuniga
msra（1994）
引用 8|浏览242
摘要
The study of the properties of inclusive production ofDs mesons and of events in which a ϕ and a muon are present in the same jet provides two independent measurements of the probability,fsw, for a heavy quark to hadronize into a strangeB orD meson. The data sample analysed corresponds to 243,000 hadronicZ0 decays. The combined value of these measurements isfsw=0.19±0.06±0.08. From the flight distance distributions ofDs and of (ϕ-lepton) secondary vertices, with the lepton emitted at high transverse momentum relative to the jet axis, two values are obtained for theBs0 meson lifetime. Combining these measurements with a previous result based on the study ofDs-μ events, theBs0 meson lifetime is measured to be: 0.96±0.37 ps.
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