Measurement Of The (B)Over-Bar(S)(0) Meson Lifetime In D-S(+)Pi(-) Decays

R Aaij,B Adeva,M Adinolfi,A Affolder,Z Ajaltouni,S Akar,J Albrecht,F Alessio, M Alexander,S Ali,G Alkhazov,P Alvarez Cartelle,A A Alves,S Amato,S Amerio,Y Amhis,Linkun An,L Anderlini,Jennifer L 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,W Baldini,R J Barlow,C Barschel,S Barsuk,W Barter,V Batozskaya,V Battista, A Bay,L Beaucourt,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,J Brodzicka,N H Brook,H Brown,A Bursche,G Busetto,J Buytaert,S Cadeddu,R Calabrese, M Calvi,M Calvo Gomez,P Campana,D Campora Perez,A Carbone,G Carboni,R Cardinale,A Cardini,L Carson, K Carvalho Akiba, G Casse,L Cassina,L Castillo Garcia,M Cattaneo,Ch Cauet,R Cenci,M Charles,Ph Charpentier,M Chefdeville,S Chen,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 Dambrosio,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,K Dreimanis,G Dujany,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 Ely,S Esen,H Evans, Tom P Evans,A Falabella,C Farber,C Farinelli, N Farley,S Farry, R F Fay,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,Jinrong Fu,E Furfaro,A Gallas Torreira,D Galli,S Gallorini,S Gambetta,M Gandelman,P Gandini,Yanqing Gao,J Garcia Pardinas,J Garofoli,J Garra Tico,L Garrido,C Gaspar,R Gauld,L Gavardi,G Gavrilov,E Gersabeck,M Gersabeck,T Gershon, Ph Ghez,A Gianelle,S Giani,V Gibson,L Giubega,V V Gligorov,C Gobel,D Golubkov,A Golutvin,A Gomes, 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 Grunberg,B Gui,E Gushchin,Yu Guz,T Gys,C Hadjivasiliou,G Haefeli,C Haen,S C Haines,Simon J Hall,B Hamilton,T Hampson,X Han,S Hansmannmenzemer,N Harnew,S T Harnew, J H Harrison,Jinliang He,T Head,V Heijne,K Hennessy,P Henrard,L Henry,J A Hernando Morata,E Van Herwijnen, M Hes,A Hicheur, D J 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,F Jing,M John,David E Johnson,C R Jones, C Joram,B Jost,N Jurik,M Kaballo,S Kandybei,W Kanso,M Karacson,T M Karbach,S Karodia,M H Kelsey,I R Kenyon,T Ketel,B Khanji, C Khurewathanakul,S Klaver,K Klimaszewski,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,Friedrich E Kruse,W Kucewicz,M Kucharczyk,V Kudryavtsev,K Kurek,T Kvaratskheliya,V N La Thi,D Lacarrere,G D Lafferty,A Lai,D Lambert,R W Lambert,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,Yin Li,T Likhomanenko,M Liles,R Lindner,C Linn,F Lionetto,Bo Liu,S Lohn,I Longstaff, J H Lopes,N Lopezmarch, P Lowdon, Honggang Lu,D Lucchesi,H Luo,A Lupato,E Luppi,O Lupton,F Machefert,I V Machikhiliyan,F Maciuc,O Maev,S 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PHYSICAL REVIEW LETTERS（2014）

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Abstract

We present a measurement of the ratio of the (B) over bar (0)(s) meson lifetime, in the flavor-specific decay to D-s(+)pi(-), to that of the (B) over bar (0) meson. The pp collision data used correspond to an integrated luminosity of 1 fb(-1), collected with the LHCb detector, at a center-of-mass energy of 7 TeV. Combining our measured value of 1.010 +/- 0.010 +/- 0.008 for this ratio with the known (B) over bar (0) lifetime, we determine the flavor-specific (B) over bar (0)(s) lifetime to be tau((B) over bar (0)(s) ) = 1.535 +/- 0.015 +/- 0.014 ps, where the uncertainties are statistical and systematic, respectively. This is the most precise measurement to date, and is consistent with previous measurements and theoretical predictions.

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