Measurement of the Xi(-)(b) and Omega(-)(b) baryon lifetimes
R Aaij,B Adeva,M Adinolfi,A Affolder, Z Ajaltouni,J Albrecht, F Alessio,M Alexander,Syed F Ali, G Alkhazov,P Alvarez Cartelle,S Amato,S Amerio,Y Amhis,L An,L Anderlini,J Anderson,R Andreassen,M Andreotti,J E Andrews,R B Appleby,O Aquines Gutierrez,F Archilli, A Artamonov,M Artuso,E Aslanides,G Auriemma, M Baalouch,S Bachmann,J J Back, A Badalov,V Balagura,W Baldini,R J Barlow,C Barschel,S Barsuk,W Barter, V Batozskaya,Th Bauer, A Bay,J Beddow,F Bedeschi,I Bediaga,S Belogurov,K Belous,I Belyaev,E Benhaim, G Bencivenni,S Benson,J Benton, A Berezhnoy,R Bernet,M O Bettler,M Van Beuzekom,A Bien,S Bifani,T Bird,A Bizzeti,P M Bjornstad,T Blake,F Blanc,J Blouw,S Blusk,V Bocci,A Bondar,N Bondar,W Bonivento,S Borghi,A Borgia,M Borsato,T J V Bowcock,E Bowen,C Bozzi,T Brambach,J Van Den Brand,J Bressieux,D Brett,M Britsch,T Britton,N H Brook,Heather Brown,A Bursche,G Busetto,J Buytaert,S Cadeddu,R Calabrese, M Calvi,M Calvo Gomez,A Camboni, P Campana,D Campora Perez,A Carbone,G Carboni,R Cardinale, A Cardini,H Carranzamejia,L Carson,K Carvalho Akiba, G Casse, L Cassina,L Castillo Garcia,M Cattaneo,Ch Cauet,R Cenci,M Charles,Ph Charpentier,S F Cheung,N Chiapolini, M Chrzaszcz,K Ciba,X Cid Vidal, G Ciezarek,P E L Clarke,M Clemencic,H V Cliff,J Closier,V Coco, J Cogan,E Cogneras,P Collins, A Comermamontells,A Contu,A Cook, M Coombes,S Coquereau,G Corti, M Corvo, I Counts,B Couturier, G Cowan,D C Craik,M Cruz Torres,S Cunliffe,R Currie, C D Ambrosio,J Dalseno,P David,A Davis,K De Bruyn,S De Capua,M De Cian,J M De Miranda,L De Paula,W De Silva,P De Simone,D Decamp,M Deckenhoff,L Del Buono, N Deleage,D Derkach,O Deschamps,F Dettori,A Di Canto,H Dijkstra,S Donleavy,F Dordei,M Dorigo,A Dosil Suarez,D Dossett,A Dovbnya,F Dupertuis,P Durante,R Dzhelyadin,A Dziurda,A Dzyuba,S Easo,U Egede,V Egorychev,S Eidelman,S Eisenhardt,U Eitschberger,R Ekelhof,L Eklund,I El Rifai,Ch Elsasser,S Esen,Thomas G Evans,A Falabella, C Faeber,C Farinelli, N Farley,S Farry,D Ferguson,V Fernandez Albor,F Ferreira Rodrigues, M Ferroluzzi,S Filippov,M Fiore,M Fiorini,M Firlej,C Fitzpatrick,T Fiutowski,M Fontana,F Fontanelli,R Forty,O Francisco,M Frank,C Frei,M Frosini,J Fu,E Furfaro,A Gallas Torreira,D Galli,S Gallorini,S Gambetta,M Gandelman,P Gandini,Y Gao,J Garofoli,J Garra Tico,L Garrido,C Gaspar,R Gauld, L Gavardi,E Gersabeck,M Gersabeck, T Gershon,Ph Ghez, A Gianelle,S Giani, V Gibson,L Giubega,V V Gligorov,C Goebel,D Golubkov, A Golutvin,Ana Gomes,H Gordon,C Gotti,M Grabalosa Gandara,R Graciani Diaz,L A Granado Cardoso,E Grauges,G Graziani,A Grecu,E Greening,S Gregson,P Griffith, L Grillo, O Grueberg,B Gui,E Gushchin,Yu Guz,T Gys, C Hadjivasiliou,G Haefeli,C Haen,S C Haines,Spencer E Hall,B Hamilton,T Hampson,X Han,S Hansmannmenzemer, N Harnew,S T Harnew, Joseph G Harrison,T Hartmann,Jiang He,T Head,V Heijne,K Hennessy, P Henrard,L Henry,J A Hernando Morata,E Van Herwijnen,M Hess,A Hicheur, D Hill,M Hoballah,C Hombach,W Hulsbergen,P Hunt,N Hussain,D E Hutchcroft,D Hynds,M Idzik,P Ilten,R Jacobsson,A Jaeger, J Jalocha,E Jans,P Jaton, A Jawahery,M Jezabek,F Jing,M John,D R Johnson,C R Jones, C Joram, B Jost,N Jurik,M Kaballo,S Kandybei,W Kanso,M Karacson,T M Karbach,M H Kelsey,I R Kenyon,T Ketel,B Khanji, C Khurewathanakul,S Klaver, O Kochebina, M Kolpin,I Komarov,R F Koopman,P Koppenburg,M Korolev,A Kozlinskiy,L Kravchuk,K Kreplin,M Kreps,G Krocker,P Krokovny,F Kruse,M Kucharczyk,V Kudryavtsev, K Kurek,T Kvaratskheliya,V N La Thi, D Lacarrere,G D Lafferty,A Lai,David L Lambert,R W Lambert,E Lanciotti,G Lanfranchi,C Langenbruch,B Langhans,T E Latham,C Lazzeroni,R Le Gac,J Van Leerdam,J P Lees,R Lefevre, A Leflat,J Lefrancois,S Leo,O Leroy,T Lesiak, B Leverington,Yang Li,M Liles,R Lindner, Christian Linn, F Lionetto, Boning Liu,G Liu, S Lohn,I Longstaff,J H Lopes,N Lopezmarch, P Lowdon,Hanqing Lu,D Lucchesi,H Luo, A Lupato,E Luppi,O Lupton,F Machefert,I V Machikhiliyan,F Maciuc,O Maev,S Malde,G Manca,G Mancinelli,M Manzali,J Maratas,J F Marchand,U Marconi,C Marin Benito,P Marino, R Maerki,John W Marks,G Martellotti,A Martens,A Martin Sanchez,M Martinelli,D Martinez Santos,F Martinez Vidal,D Martins Tostes,A Massafferri,R Matev,Z Mathe,C Matteuzzi,A Mazurov,Michael Mccann,James R Mccarthy,A Mcnab,R Mcnulty,B Mcskelly,B T Meadows,F Meier, Michael Meissner,M Merk,D A Milanes,M N Minard,N Moggi,J Molina Rodriguez,S Monteil,D Moran,M Morandin,P Morawski, A Morda,M J Morello, J Moron,R Mountain, F Muheim,K Mueller,R Muresan, M Mussini,B Muster, P S Naik,T Nakada,R Nandakumar,I Nasteva,M Needham, N Neri,S Neubert,N Neufeld, M Neuner,A D Nguyen,T D Nguyen,C Nguyenmau,M Nicol,V Niess,R Niet,N Nikitin,T Nikodem, A Novoselov, A Oblakowskamucha,V Obraztsov,S Oggero,S Ogilvy,O Okhrimenko,R Oldeman,G Onderwater,M Orlandea,J M Otalora Goicochea,P Owen,A Oyanguren,B K Pal,A Palano,F Palombo,M Palutan,J Panman,A Papanestis,M Pappagallo,C Parkes,C J Parkinson,G Passaleva,G D Patel, Mishaal B Patel,C Patrignani,A Pazos Alvarez,A Pearce,A 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PHYSICS LETTERS B（2014）
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摘要
Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb(-1), the Xi(-)(b) and Omega(-)(b) baryons are reconstructed in the Xi(-)(b) -> J/psi Xi(-) and Omega(-)(b) -> J/psi Omega(-) decay modes and their lifetimes measured to be tau(Xi(-)(b)) = 1.55(-0.09)(+0.10) (stat) +/- 0.03 (syst) ps, tau(Omega(-)(b)) = 1.54(-0.21)(+0.26) (stat) +/- 0.05 (syst) ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions. (C) 2014 The Authors. Published by Elsevier B.V.
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physics,ratio,physical sciences
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