Measurement of theΛb0Lifetime Using Semileptonic Decays

V M Abazov,P Verdier,V Sirotenko,S Fu,R F Rodrigues,P J Van Den Berg,W E Cooper,P Neustroev,E Von Toerne,H Greenlee,R Illingworth,M Eads,A Bross,S H Ahn,D A Stoyanova,R Jesik,R Unalan,H Schellman,M Demarteau,S Reucroft,A L Lyon,C Schmitt,T Millet,P Polozov,J M Kalk,T Nunnemann,S Hossain,O Atramentov,H Nilsen,P Skubic,R Hooper,S Beale,E Galyaev,A Patwa,L Bellantoni,L Bagby,M S Rangel,E De La Cruz-Burelo,J M Kohli,J Steele,A Jonckheere,P Rubinov,D Khatidze,V Hynek,H A Neal,C P Buszello,B Tiller,G D Alexeev,U Bassler,P M Tuts,W Geist,P N Ratoff,P Padley,J Ellison,K W Merritt,A Yurkewicz,V M Korablev,A Magerkurth,D Boline,S Banerjee,P Haefner,M Yan,R Piegaia,A Pompoš,H Weerts,D K Cho,R K Shivpuri,F Villeneuve-Seguier,T Yasuda,V Kaushik,N A Naumann,M Abolins,G Grenier,D Hedin,Y Hu,S Kermiche,M Wetstein,A Melnitchouk,A Baden,D Karmanov,Y A Yatsunenko,R Beuselinck,W M Van Leeuwen,D Wicke,P Banerjee,B Åsman,M Arthaud,R Bernhard,H Hoeth,R E Hall,M P Sanders,I Torchiani,D V Bandurin,S Uvarov,N J Buchanan,D Onoprienko,T Schliephake,G Alkhazov,D Käfer,L S Ancu,M Ahsan,S P Denisov,M Cooke,M Ćwiok,P Lebrun,L Stutte,N Gollub,T Moulik,F Charles,G Sajot,M Shamim,O Mundal,I Katsanos,P Renkel,M Sosebee,A Zatserklyaniy,A Chandra,S Chakrabarti,D Krop,N Khalatyan,B G Pope,T H Burnett,D Edmunds,B Quinn,C Schwanenberger,D Shpakov,A Rakitine,Y Arnoud,E Kajfasz,Y Pogorelov,D Buchholz,M Michaut,M S Anzelc,B Kothari,S W Youn,S Blessing,H D Wahl,A P Heinson,A Kryemadhi,H Dong,P Mättig,T Scanlon,V V Lipaev,J Hays,Y Peters,E G Zverev,J Dyer,A Meyer,M Anastasoaie,G Obrant,D Smirnov,F Badaud,M Arov,R D Schamberger,P Houben,T Toole,J Temple,A Bellavance,L Christofek,M Petteni,Y Scheglov,M Merkin,J M Heinmiller,F Guo,J Lellouch,I A Vasilyev,G Ginther,J Cammin,S Kappler,P Vint,G Savage,V V Tokmenin,N M Cason,E Strauss,J Snow,R Van Kooten,S Uzunyan,J F Bartlett,G S Muanza,D Bauer,L Berntzon,R J Madaras,P Tamburello,A Leflat,M Buehler,V Zutshi,V Shary,R K Mommsen,I Ripp-Baudot,J Osta,P D Grannis,H Da Motta,B Martin,C Biscarat,M Diesburg,B Gómez,F Tissandier,P Schieferdecker,M Jaffré,K J Rani,M Pangilinan,P Hansson,W L Prado Da Silva,P Svoisky,A Lobodenko,J Warchol,L Lobo,B Baldin,K Herner,J M Hauptman,C Jarvis,A Alton,M Strovink,P Rich,K Yip,R Partridge,R Yamada,J Molina,C Zeitnitz,P M Perea,C De Oliveira Martins,D Kau,V Siccardi,J Piper,A V Kozelov,V M Podstavkov,B Hoeneisen,J Barreto,M Ford,S M Lietti,H T Diehl,G Weber,N Parua,J Sekaric,N Oshima,P De Jong,D Denisov,M Naimuddin,V A Bezzubov,A Evdokimov,B Spurlock,R Otec,C Ay,V Lesne,S Cihangir,S Söldner-Rembold,D Gillberg,B Tuchming,K Bos,J P Negret,B Penning,S Fuess,S Sengupta,D Chakraborty,C Magass,M Vaupel,H E Fisk,B Van Eijk,M Fortner,A S Ito,N K Mondal,A Boehnlein,T Gadfort,M Hohlfeld,A A Shchukin,K M Chan,L S Vertogradov,S J Park ,W Carvalho,S J Hong,D Zhang,G Davies,J M Butler,S Caron,Matthias Kirsch ,D Mackin,A Juste Rozas ,S Hagopian,A Vartapetian,Y Gershtein,D Ziemińska ,M Besançon,P Jönsson ,G G Hesketh ,N Wermes,D Tsybychev,J G.r Lima ,M Kirby ,S Cŕéṕe-Renaudin ,A Das,J Degenhardt ,Y Liu,G A Alves,A Dominguez,J Yu,A Schwartzman,M Zieliński ,I A Bertram ,C Clément,K Soustružnı́k ,V O’Dell,T Kurča,D Gelé,M E Pol ,J Mitrevski,G Pawloski,F Couderc,G Landsberg,Sandhya Jain ,M Kopál ,W Taylor,I Hall,G Gutiérrez ,G Safronov,H Castilla‐Valdez ,P Calfayan,M Souza,D Brown,C Bélanger-Champagne ,V L Malyshev,N Makovec,B Zhou,C Garćıa ,L Živković ,C A Johnson ,G R Snow,S Kunori,H Evans,G Blazey,Y M Kharzheev,L Duflot,Z Hubáček ,R Hauser,K Peters,D Ćutts ,В Н Евдокимов ,R L Mccarthy ,A García-Bellido ,R Hirosky,A Sznajder,A Nomerotski,S Yacoob,J Zhu,Z Liu,P Pétroff,J A Parsons ,G Hamel De Monchenault ,R W Moore,L Dudko ,P L.m Podesta-Lerma ,Y Coadou,P Vokáč ,U Heintz,F Fiedler,S Anderson,M Owen,E W Varnes,N Parashar,J Hobbs ,T Ferbel,G Watts,K Harder,T Bose,J Kasper,S Bürke ,E Aguiló ,A Santoro,Y Maravin,A Haas,P Bargassa,M C Cousinou ,D Duggan,L Wang,V Stolin,E M Gregores,C Tully,C Ochando,S C Eno ,J Stark,D Lincoln,F Chevallier,M Tomoto,A Ferapontov ,L Sonnenschein,D Schaile,R Démina ,J Hegeman ,S B Beri,T J Kim,A Kharchilava,J R Kalk,R Kehoe,R Brock,J Li,A Grohsjean,M Johnson,M Voutilainen,M Vreeswijk,J.-F Grivaz,M Titov,H Prosper ,M Wobisch,Marcus Lewin ,L Uvarov,C E Gerber,T Adams,T Kühl ,T Christoudias,S Strandberg,Z D Greenwood,M Wayne,K Bloom,M Mulhearn,J Lazo-Flores ,V Bhatnagar,H Fox,Y Enari,H S Mao,B S Acharya,S Protopopescu,A G Goussiou ,P G Mercadante,B Clément,A Lounis,A Ziemiński ,D Wood ,Ashok Kumar ,Yu Chen ,E J Gallas ,N Varelas,M Narain,А В Попов ,M Weber,S Sumowidagdo,Q Z Li,P Slattery,S Grünendahl,Sijbrand J De Jong ,J Meyer,M R Adams ,A Sánchez-Hernández,L Sawyer,H Malbouisson ,R Ströhmer,P A Love ,F Lacroix,B Vachon,D R Claes ,A Harel,M H.l.s Wang ,K Ranjan,L Mendoza,M Begalli,Andre David Tinoco Mendes ,P Gutiérrez ,C Ávila ,G Bernardi,S Kahn,F Rizatdinova,J Levêque ,S Jabeen,A F Barfuss ,B C Choudhary ,S K Park,R P Smith,D Strom,C Royon,D Lam,M Grünewald ,R Lipton,V Gavrilov,S Snyder,G Brooijmans,S Dugad ,Andreas Wenger ,A Duperrin,M Talby,K Jakobs,R D Harrington ,A Quadt,B C.k Casey ,S Choi,V D Elvira,A Dyshkant,K De,I Iashvili,F Blekman,A C.s Assis Jesus ,T R Wyatt,M Rijssenbeek,R G Wagner ,K Johns,P Telford,C Hensel,N J Hadley,W M Lee,Ph Gris,S Burdin,S Wimpenny ,C T Potter ,R Kaur,A White,E Barberis,G J Otero Y Garzón,J Guo,F Filthaut,D C O’Neil,E Shabalina,W C Fisher ,K Hanagaki,A Brandt,M Hildreth ,A Askew,H J Lubatti,J Strandberg,A Stone,А Калинин ,S Robinson,H Kim,M Lokajı́ček ,M Verzocchi,H D Yoo,A Sopczak,F Déliot,M Begel,V Buescher,G Borissov,C Autermann,R Schwienhorst,L Mundim,F Lehner,T Hebbeker,P Ermolov,S Calvet,G W Wilson,M Strang ,S Desai,D Blöch ,K Chan,M A Pleier ,E Cheu,S F Novaes,V Šimák ,J P Konrath ,B Klima,M Mulders,T Bolton ,A Bean,E Nagy,P Mal ,A Kupčo ,P Lewis,M Corcoran,Han Liu ,T Zhao,M Strauss,B Abbott,P A Kasper ,P Baringer,P C Bhat,H Severini,J Kvita,T Andeen,L Li,T Trefzger,Y Xie,R Ruchti,Bernard Andrieu ,A K.a Maciel ,J Linnemann,C Galea ,J A Benitez,J Haley,J Qian,S Lammers,A J Tanasijczuk ,S Malik,A Khanov

doi:10.1103/physrevlett.99.182001

Abstract

We report a measurement of the Lambda(b)(0) lifetime using a sample corresponding to 1.3 fb(-1) of data collected by the D0 experiment in 2002-2006 during run II of the Fermilab Tevatron collider. The Lambda(b)(0) baryon is reconstructed via the decay Lambda(b)(0)-->micronuLambda(c)(+)X. Using 4437+/-329 signal candidates, we measure the Lambda(b)(0) lifetime to be tau(Lambda(b)(0))=1.290(-0.110)(+0.119)(stat)(-0.091)(+0.087)(syst) ps, which is among the most precise measurements in semileptonic Lambda(b)(0) decays. This result is in good agreement with the world average value.

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