Measurement Of The B(0) And B+ Lifetimes

P.D. Acton,Gideon Alexander,J. Allison,P.P. Allport,K.J. Anderson,S. Arcelli,A. Astbury,D. Axen,G. Azuelos,G.A. Bahan,J.T.M. Baines,A.H. Ball,J. Banks,R.J. Barlow,Stephen M Barnett,J Richard Batley,G. Beaudoin,A. Beck,G.A. Beck,J A Becker,T. Behnke,K.W. Bell,G. Bella,P. Bentkowski,P. Berlich,Siegfried Bethke,O. Biebel,U. Binder,I.J. Bloodworth,P. Bock,B. Boden,H.M. Bosch,H. Breuker,P. Bright-Thomas,R.M. Brown,A. Buijs,H.J. Burckhart,C. Burgard,P. Capiluppi,R.K. Carnegie,A.A. Carter,Jonathan Carter,C.Y. Chang,D.G. Charlton,S.L. Chu,P.E.L. Clarke,I. Cohen,J.C. Clayton,W.J. Collins,J.E. Conboy,M D Cooper,M. Coupland,M. Cuffiani,S. Dado, G.M. Dallavale,S. De Jong,L.A. del Pozo,Hui Hua Deng,A. Dieckmann,M. Dittmar,M.S. Dixit,E. do Couto e Silva,J.E. Duboscq,E. Duchovni,G. Duckeck,I.P. Duerdoth,D.J.P. Dumas,P.A. Elcombe,P.G. Estabrooks,E. Etzion,H.G. Evans,F. Fabbri,M. Fierro,M. Fincke-Keeler,H.M. Fischer,D.G. Fong,M. Foucher,A. Gaidot,O. Ganel,J William Gary,J. Gascon,R.F. McGowan,N.I. Geddes,C. Geich-Gimbel,S.W. Gensler,F.X. Gentit,G. Giacomelli,R. giacomelli,V. Gibson,W.R. Gibson,J.D. Gillies,J. Goldberg,M.J. Goodrick,W. Gorn,C. Grandi,F.C. Grant,J. Hagemann,G.G. Hanson,M. Hansroul,C.K. hargrove,P.F. Harrison,J C Hart,P.M. Hattersley,M. Hauschild,C.M. Hawkes,E. Heflin,R.J. Hemingway,R.D. Heuer,J.C. Hill,S.J. Hillier,T. Hilse,D.A. Hinshaw,J.D. Hobbs,P.R. Hobson,D. Hochman,R James Homer,A.K. Honma,R.E. Hughes-Jones,R. Humbert,P. Igo-Kemenes,H. Ihssen,D.C. Imrie,A.C. Janissen,A. Jawahery,P.W. Jeffreys,H. Jeremie,M. Jimack,M. Jobes,R.W.L. Jones,P. Jovanovic,Charles C H Jui,D. Karlen,K. Kawagoe,T. Kawamoto,R.K. Keeler,R.G. Kellogg,B.W. Kennedy,S. Kluth,T. Kobayashi,D.S. Koetke,T.P. Kokott,S. Komamiya,L. Köpke,J.F. Kral,R. Kowalewski,J. von Krogh,J. Kroll,Michihiko Kuwano,P. Kyberd,G.D. Lafferty,R. Lahmann,Francois Lamarche,J.G. Layter,P. Leblanc,A M Iv Lee,M.H. Lehto,D. Lellouch,C. Leroy,J. Letts,S. Levegrün,L. Levinson,S.L. Lloyd,F.K. Loebinger,J.M. Lorah,B. Lorazo,M.J. Losty,X.C. Lou,J. Ludwig,M. Mannelli,S. Marcellini,G. Maringer,C. Markus,Andre Martin,J.P. Martin,Tsutomu Mashimo,P. Mättig,U. Maur,J A Mckenna,T.J. McMahon,J.R. McNutt,F. Meijers,D. Menszner,F.S. Merritt,H. Mes,Aldo Michelini,R.P. Middleton,G. Mikenberg,J. Mildenberger,David J Miller,R. Mir,W. Mohr,C. Moisan,Angelo Montanari,T. Mori,M. Morii,T. Mouthuy,B. Nellen,H.H. Nguyen,Masanori Nozaki,S.W. O'Neale,F.G. Oakham,F. Odorici,H.O. Ogren,C.J. Oram,M.J. Oreglia,S. Orito,J.P. Pansart,B. Panzer-Steindel,P. Paschievici,G.N. Patrick,N. Paz-Jaoshvili,P. Pfister,J.E. Pilcher,J L Pinfold,D. Pitman,D.E. Plane,P. Poffenberger,B. Poli,A. Pouladdej,T.W. Pritchard,H. Przysiezniak,G. Quast,M.W. Redmond,David A Rees,G.E. Richards,D. Robinson,A. Rollnik,J Michael Roney,E. Ros,S. Rossberg,A.M. Rossi,M. Rosvick,P. Routenburg,K. Runge,O. Runolfsson,D.R. Rust,Minoru Sasaki,C. Sbarra,A.D. Schaile,O. Schaile,W. Schappert,P. Scharff-Hansen,P. Schenk,B. Schmitt,H. von der Schmitt,Stuart L Schreiber,C. Schwick,J. Schwiening,W.G. Scott,M. Settles,T.G. Shears,B.C. Shen,C.H. Shepherd-Themistocleous,P. Sherwood,R. Shypit,A. Simon,P. Singh,G.P. Siroli,A. Skuja,A.M. Smith,Thomas J Smith,G.A. Snow,R. Sobie,R.W. Springer,M. Sproston,K. Stephens,J. Steuerer,R. Ströhmer,D. Strom,T. Takeshita,P. Taras,S. Tarem,M. Tecchio,P. Teixeira-Dias,N. Tesch,N.J. Thackray,M.A. Thomson,Emilio Torrentelujan,G. Transtromer,N.J. Tresilian,T. Tsukamoto,Mary G Turner,G. Tysarczyk-Niemeyer,D. Van den plas,R. Van Kooten,G.J. VanDalen,J O Vasseur,C.J. Virtue,A. Wagner,D.L. Wagner,C. Wahl,Joseph P Walker,C.P. Ward,D.R. Ward,P.M. Watkins,A.T. Watson,N.K. Watson,M. Weber,P. Weber,P.S. Wells,N. Wermes,M.A. Whalley,George A Wilson,J.A. Wilson,V-H. Winterer,T. Wlodek,S A Wotton,T.R. Wyatt,R. Yaari,A. Yeaman,G. Yekutieli,M. Yurko,W. Zeuner,G.T. Zorn

PHYSICS LETTERS B（1993）

Cited 58|Views76

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Abstract

From a data sample of approximately 240 000 hadronic Z0 decays recorded during 1991 a sample of about 130 semileptonic B hadron decays containing a D0, D+ or D*+ has been isolated. Using silicon microvertex detector information the decay vertices in these events have been reconstructed. The average B hadron lifetime of the mix of B hadrons in this event sample is measured to be 1.51(+0.16/-0.14) +/- 0.11 ps. From the distribution of decay times in the different samples the lifetimes of the B0 and B+ mesons are determined to be 1.51(+0.24+0.12/-0.23-0.14) ps and 1.51(+0.30+0.12/-0.28-0.14) ps, respectively. The measured ratio of the B+ to B0 lifetimes of 1.00(+0.33/-0.25) +/- 0.08 supports expectations that the lifetimes are similar.

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particle physics

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