Measurement of the average B hadron lifetime in Z0 decays using reconstructed vertices.

K Abe,J F Labs,Y Iwasaki,U Schneekloth,D J Sherden,A Seiden,B Mours,M Kalelkar,C Simopoulos,E Church,A W Weidemann,R De Sangro,M Daoudi,S Willocq,M Loreti,F Suekane,R Kajikawa,D Aston,M Nussbaum,L Piemontese,A Szumilo,M Langston,R Cotton,R Messner,T Akagi,G D Punkar,R W Zdarko,H Park,J E Brau,A Lu,R S Panvini,S Hedges,R Frey,U Nauenberg,N B Sinev,R Massetti,M Woods,G Blaylock,D Falciai,P C Rowson,O Bardon,D O Caldwell,O H Saxton,C Baltay,A Sugiyama,A I Trandafir,B N Ratcliff,R Prepost,J Wyss,G Baranko,M H Shaevitz,E Vella,D W G S Leith,R Elia,H L Lynch,D Su,C C Young,H O Cohn,T Gillman,H R Band,W J Wisniewski,T Maruyama,E L Hart,M Carpinelli,C Vannini,E Torrence,R Verdier,H Kawahara,W W Ash,M Piccolo,C Fan,G Mancinelli,R Dubois,B Camanzi,I Karliner,T Schalk,B I Eisenstein,R K Yamamoto,H Yuta,R H Schindler,G B Word,G M Bilei,I Abt,T Nagamine,E Mazzucato,S Manly,V Cook,T H Burnett,A P Waite,D Calloway,L S Osborne,G D Hallewell,H Neal,K Baird ,J Ma,P.n Burrows ,J P Venuti,A Castro,Henry W Kendall ,A Calcaterra,S González ,P Mockett ,H Hwang,G Mantovani,S Williams ,W Busza,M Hildreth ,M G Strauss,E R Weiss,N.j Allen ,J R Bogart,T W Markiewicz,S R Wagner,S L White,B A Schumm,Shingo Suzuki ,T Pavel ,L.s Rochester ,T Takahashi,I M Peruzzi ,T Bolton,C J Ahn,G Shapiro,M King ,P De Simone,S Yellin ,H Steiner,J Rothberg ,S Shapiro ,M B Barakat,P G Verdini,E Pieroni,A C Benvenuti,C Zeitlin,V.v Serbo ,J A Snyder,P Stamer,K Pitts ,R Kofler ,T Barklow,R S B King ,J A Coller,A Lath,R A Johnson,M Swartz,S R Smith,R Dell’orso ,R Castaldi,D C Williams,K Furuno,S S Hertzbach,David Jeff Jackson ,R J Plano,A D’oliveira ,Hyejoo Kang ,F Ë Taylor ,J Lauber ,S Watts ,X Liu,S Sen,G R Bower,D Müller ,R Steiner,A Johnson ,M Dima,K Shmakov ,J J Russell,J Va’vra ,T R Junk ,J Quigley,K C Moffeit,S F Schaffner,J T Shank,M Cavalli‐Sforza ,C Y Prescott,W Bugg ,Ximeng Yang ,J A Jaros ,D L Burke ,Y Ohnishi,T Usher,P Rensing ,Z Zhang,R Cassell,R Ben‐David ,D Williams ,P.y.c Du ,J R Johnson,R Kroeger ,Y Hasegawa,R Cowan ,J M Yamartino,J D Turk,Robert S Wilson ,E W Hughes,G Müller,M.e Huffer ,P Jacques,A K Mckemey,Hiroaki Masuda ,Y Kim,G E Gladding ,T W Reeves,C Damerell ,F J Wickens,G Zapalac,M J Fero,B Meadows ,D Bisello,J S Whitaker,N.m Krishna ,A.o Bazarko ,M Breidenbach,D G Coyne,J Huber,M X Liu,J Reidy,Jianfeng Zhou

doi:10.1103/physrevlett.75.3624

Abstract

We report a measurement of the average $B$-hadron lifetime using data collected with the SLD detector at the SLC in 1993. An inclusive analysis selected three-dimensional vertices with $B$-hadron lifetime information in a sample of 50k $Z^{0}$ decays. A lifetime of $1.564\pm0.030\,(\rm stat)\pm 0.037\,(\rm syst)$~ps was extracted from the decay length distribution of these vertices using a binned maximum-likelihood method.

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