Observation of CP violation in [formula omitted] decays

C. Haen,T. Shears,S. De Capua,A. D. Nguyen ,A. Camboni,D. Johnson,V. Gibson,T. Brambach,M. Liles,P. F. Harrison ,D. A. Roa Romero ,C. Gaspar,C. Göbel,M. S. Rangel ,M. Gersabeck,M. T. Tran ,S. Barsuk,F. Ferreira Rodrigues ,O. Maev,R. Waldi,B. Khanji,H. Dijkstra,Ll. Garrido ,J. P. Lees ,M. Benayoun,M. Zangoli,F. Fontanelli,M. Schiller,L. Zhang,R. Jacobsson,B. Adeva,R. Märki,C. Deplano,C. R. Jones ,A. Golutvin,T. M. Karbach ,K. Ciba,A. Zvyagin,V. Vagnoni,D. Websdale,A. Phan,A. Massafferri,M. Seco,M. Palutan,P. Seyfert,M. Pappagallo,M. Williams,L. De Paula,H. Voss,D. van Eijk,R. Forty,B. Couturier,A. Grecu,J. Harrison,G. Manca,A. Sarti,D. Golubkov,R. Nandakumar,R. Schwemmer,F. Archilli,I. Shapoval,J. Prisciandaro,E. Maurice,M. Coombes,S. Perazzini,S. Eidelman,G. Sabatino,M. Jahjah Hussein,V. Obraztsov,L. Kravchuk,F. Xing,L. Eklund,F. J. P. Soler ,A. Dosil Suárez,A. Bobrov,M. Kucharczyk,В. Яковенко ,A. Gallas Torreira,T. Britton,N. K. Watson ,E. Hicks,B. Souza De Paula,N. Nikitin,V. Niess,A. Dovbnya,D. Hutchcroft,G. McGregor,G. Cowan ,B. Liu,L. M. Garcia Martin ,G. Passaleva,A. Vollhardt,S. Ricciardi,M. H. Schune ,S. Farry,E. Polycarpo,I. Sepp,A. Powell,P. Hunt,B. Popovici,O. De Aguiar Francisco ,D. Lacarrère ,C. Matteuzzi,T. Hartmann,C. Bozzi,V. Fave,E. Lanciotti,R. Graciani Diaz,S. Roiser,S. Gregson,A. Bień ,M. Cattaneo,M. Kaballo,P. Rodríguez Pérez ,F. Muheim,N. Neufeld,A. Bizzeti,K. Carvalho Akiba,Ph. Ghez,J. Imong,H. Ruiz,M. Witek,M. van Beuzekom,O. Callot,I. V. Machikhiliyan ,R. Oldeman,S. Eisenhardt,G. Valenti,A. Borgia,S. Swientek,C. D’ambrosio ,R. Santinelli,K. Rinnert,F. Dupertuis,F. Eisele,B. Jean‐Marie ,G. Graziani,L. Shekhtman,M. Karacson,A. Affolder,E. Greening,D. Popov,A. A. Alves ,B. Rakotomiaramanana,M. Kreps,M. Calvo Gomez,P. Spradlin,M. Meissner,U. Kerzel,N. López-March ,B. Pietrzyk,H. V. Cliff ,R. S. Huston ,B. Viaud,V. Coco,M. Frosini,S. T’jampens ,F. F. Wilson ,M. De Cian,I. R. Kenyon ,A. Shires,R. W. Lambert ,P. E.l. Clarke ,R. M. D. Mamunur ,C. Coca,K. Senderowska,M. Tobin,A. Contu,F. Maciuc,M. Shapkin,S. Stoica,A. Comerma-Montells,E. Pérez Trigo ,O. Leroy,J. H. Lopes ,O. Okhrimenko,K. Belous,M. Calvi,J. M. De Miranda ,S. Hansmann-Menzemer,I. Belyaev,J. Wang,A. D. Webber ,D. Martínez Santos ,C. Langenbruch,M. Savrié ,N. Torr,J. Palacios,А. Артамонов ,A. C. Dos Reis ,T. Gys,Y. Gao,A. Semennikov,S. Ali,T. Latham,M. Lieng,K. Wyllie,J. Closier,Z. Xing,S. Redford,U. Egede,U. Marconi,G. Fardell,S. Cadeddu,Ch. Elsässer ,J. J. Back ,J. Benton,K. Holubyev,J. van den Brand,S. Playfer,M. Nicol,P. Owen,G. Lanfranchi,P. Krokovny,M. Martinelli,C. Hadjivasiliou,A. Keune,N. Chiapolini,G. D. Patel ,J. von Loeben,R. F. Koopman ,A. Vorobyev,A. Satta,A. Mazurov,J. M. Otalora Goicochea ,T. Skwarnicki,F. Dettori,A. Pellegrino,A. Pérez-Calero Yzquierdo,J. van Leerdam,M. Charles,C. Bauer,M. Britsch,Z. Máthé ,H. Degaudenzi,U. Straumann,A. Cardini,A. Papanestis,Y. Shcheglov,A. Richards,A. Dziurda,M. O. Bettler ,Z. Ajaltouni,V. Romanovsky,S. A. Wotton ,A. Martens,A. Lai,M. Alexander,K. Hennessy,V. K. Subbiah ,M. Sannino,R. Bernet,T. Bird,E. Rodrigues,J. Cogan,A. Carbone,J. J. Saborido Silva ,V. Egorychev,R. Silva Coutinho,F. Teubert,J. Lefrançois,R. Gauld,A. Obłąkowska-Mucha ,P. Jaton,B. Schmidt,I. Burducea,D. Galli,S. Easo,P. Szczypka,C. Frei,G. Auriemma,M. Matveev,M.-N. Minard,R. Lindner,S. Belogurov,S. Amato,P. De Simone,L. Wiggers,F. Domingo Bonal,M. Orlandea,W. Baldini,F. Jansen,J. van Tilburg,T. Ketel,G. Wilkinson,R. Ekelhof,B. Storaci,C. Barschel,M. Szczekowski,M. Needham,R. Plackett,B. Maynard,J. Serrano,U. Uwer,H. Brown,W.C. Zhang,P. David,V. Bocci,S. Blusk,Th. Bauer,E. Picatoste Olloqui,G. Corti,O. Yushchenko,G. Krocker,P. Perret,P. Ilten,N. Tuning,H. Schindler,M. Schmelling,A. Zhelezov,A. Sciubba,F. Jing,S. Vecchi,K. Kruzelecki,D. Wiedner,P. Shatalov,X. Cid Vidal,F. Stagni,C. Santamarina Ríos ,P. Henrard,L. Zhong,D. Elsby,D. Dossett,I. Raniuk,G. Haefeli,D. Voong,J. Keaveney,G. J. Rogers ,M. Merk,Y. Xie,M. M. Reid ,A. Solomin,О. Shevchenko ,A. Mac Raighne,A. Ukleja,R. Lefèvre,D. Gascon,A. Falabella,N. Sagidova,G. Ciezarek,T. Gershon,V. Shevchenko,J. Mylroie-Smith,B. Pie Valls,Hamish Gordon ,C. Potterat,A. Gomes,S. Topp-Joergensen,E. Ben-Haim,D. Pinci,G. Raven,D. Hynds,F. Machefert,N. Bondar,X. Vilasis‐Cardona ,S. Miglioranzi,M. Frank,A. Kozlinskiy,J. Buytaert,V. N. La Thi ,S. Schleich,Yu. Guz,M. Clemencic,O. Schneider,A. Schopper,A. Petrolini,J. Blouw,J. A. Hernando Morata ,W. Witzeling,S. Oggero,G. N. Patrick ,A. Novoselov,S. Bachmann,B. Muryn,D. Lambert,P. Sail,D. L. Perego ,G. Penso,M. Roselló ,H. Lu,E. Gushchin,N. Harnew,K. Kreplin,Y.M. Kim,G. Bencivenni,S. Benson,I. Nasteva,M. Veltri,E. Santovetti,A. Bursche,T. Szumlak,B. Muster,R. Le Gac,М. Королев ,R. Young,J. Anderson,S. K. Paterson ,M. John,C. Patrignani,W. Bonivento,M. Straticiuc,D. Volyanskyy,M. Patel,A. Pazos Álvarez ,T. J. V. Bowcock ,T. Hampson,N. H. Brook ,O. Aquines Gutierrez,T. Lesiak,C. Abellán Beteta ,T. Ruf,B. Saitta,F. Blanc,J. Molina Rodriguez,A. Poluektov,M. Ferro‐Luzzi ,T. Kvaratskheliya,N. Mangiafave,J. H. Rademacker ,E. Aslanides,R. Aaij,D. Brett,O. Deschamps,S. Monteil,C. J. Parkinson ,S. Wandernoth,E. Lopez Asamar,C. Pavel-Nicorescu,G. Carboni,L. Li Gioi,T. Nakada,C. Lazzeroni,Ph. Charpentier,C. Blanks,M. Sapunov,P. Campana,Y. Amhis,A. Martín Sánchez,P. Koppenburg,J. Wishahi,C. Salzmann,P. Naik,A. Bay,T. Blake,S. Tourneur,S. C. Haines ,C. Adrover,V. Pugatch,J. Panman,W. Barter,J. Garofoli,C. Nguyen-Mau,I. De Bonis,P. Morawski,W. Qian,C. Parkes,F. Soomro,K. Sobczak,R. Currie,V. Balagura,D. Esperante Pereira,P. Collins,A. Bates,C. Farinelli,M. Artuso,M. Gandelman,A. Nomerotski,S. Donleavy,J. He,L. Del Buono,I. Bediaga,M. Ubeda Garcia,R. Mureşan ,G. Pessina,S. Malde,B. Spaan,R. Vazquez Gomez,D. A. Milanes ,V. Fernandez Albor,F. Dordei,I. Videau,C. Fitzpatrick,N. Serra,R. Harji,T. Pilař,D. Vieira,C. Linn,S. Stahl,G. Mancinelli,M. Zavertyaev,N. A. Smith ,D. Savrina,E. Tournefier,J. Albrecht,A. Puig Navarro,L. Li,S. Bifani,A. Jaeger,K. de Bruyn,P. M. Bjørnstad ,V. Heijne,R. Dzhelyadin,A. Leflat,B. Sciascia,M. Schlupp,R. Mountain,D. R. Ward ,D. Décamp ,G. Alkhazov,E. Teodorescu,V. Tisserand,S. Filippov,M. Whitehead,E. van Herwijnen,E. Graugés,F. Kruse,J. Marks,R. McNulty,R. J. Barlow ,B. Gui,J. Garra Ticó ,G. Polok,J. Višniakov ,P. Vázquez Regueiro ,G. Casse,S. Kandybei,J. Bressieux,P. Diniz Batista,J. C. Garnier ,R. B. Appleby ,N. Gauvin,C. Thomas,A. Bondar,A. Palano,M. Adinolfi,J. J. Velthuis ,P. Alvarez Cartelle,J. Merkel,Y. Zhang,M. Grabalosa Gándara,L. Carson,M. Pepe Altarelli,J. Dickens,P. Robbe,T. Huse,F. Zhang,S. Ogilvy,M. Perrin-Terrin,M. Fontana,Д. Деркач ,E. Thomas,Z. Yang,R. Cardinale,V. Kudryavtsev,I. Mous,R. Santacesaria,J. Luisier,G. Liu,M. Deckenhoff,C. Färber,S. Borghi,S. Furcas,M. Knecht,E. Smith,J. Magnin,D. Moran,F. Alessio,G. D. Lafferty ,Ch. Cauet,O. Steinkamp,A. Sparkes,G. Martellotti,W. Hulsbergen,L. A. Granado Cardoso ,A. Cook,K. Müller,J. Rouvinet,P. H. Hopchev ,V. V. Gligorov ,K. Pal,C. Satriano,M. Pló Casasús ,B. Jost,A. Tsaregorodtsev,P. Gandini,P. Schaack,S. Stone,E. Jans,A. Büchler-Germann

doi:10.1016/j.physletb.2012.04.060

Abstract

An analysis of B±→DK± and B±→Dπ± decays is presented where the D meson is reconstructed in the two-body final states: K±π∓, K+K− and π+π−. Using 1.0 fb−1 of s=7TeVpp collisions, measurements of several observables are made including the first observation of the suppressed mode B±→[π±K∓]DK±. CP violation in B±→DK± decays is observed with 5.8σ significance.

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