Observation of the rare decayB+→K+π0π0and measurement of the quasi-two-body contributionsB+→K*(892)+π0,B+→f0(980)K+, andB+→χc0K+

J P Lees,A Hafner,A K Yarritu,M Davier,A V Telnov,P J Clark,E Manoni,J G Smith,G Raven,B Echenard,C L Davis,W T Meyer,L Sun,T Hartmann,M R Convery,Yu G Kolomensky,A N Yushkov,A M Ruland,D Strom,L Lanceri,S Dasu,A Cervelli,C Chen,T M Hong,D A Milanes,K J Knoepfel,Yu I Skovpen,C Sciacca,D Kirkby,H Atmacan,D A Roberts,S Passaggio,I M Peruzzi,D Lopes Pegna,F Bianchi,C C Young,N Guttman,U Nauenberg,G R Bonneaud,M Wittgen,M Nicolaci,P Kim,H L Lynch,R Cowan,R Prepost,M Carpinelli,A Oyanguren,E A Kravchenko,D A Doll,P D Dauncey,C A Chavez,M Verderi,M D Sokoloff,J Albert,R F Schwitters,R Kass,E Torrence,F Ferrarotto,A J Lankford,M Schram,E Luppi,Z Huard,J F Benitez,R De Sangro,J W Gary,R Baldini-Ferroli,R Bartoldus,P M Patel,L Piemontese,M Morii,C Bünger,K E Alwyn,G J King,T Adye,D R Peimer,D G Hitlin,H Briand,H W Wulsin,R Eckmann,M S Alam,J L Ritchie,D J Summers,B Bhuyan,W H Toki,H Koch,S Pacetti,G Onorato,K R Schubert,A Snyder,M Biasini,R Cenci,F Liu,V Ziegler,C Touramanis,W J Wisniewski,X Nguyen,V Santoro,F Palombo,J Va’Vra,W Dunwoodie,A R Buzykaev,V B Golubev,O Hamon,G Batignani,P Sonnek,A M Eisner,S Bettarini,C Bozzi,M Martinelli,M Bondioli,I Ofte,N Tasneem,J M Losecco,G Calderini,G Finocchiaro,F Le Diberder,M J Lewczuk,M V Purohit,A P Onuchin,L Li Gioi,S Playfer,E P Solodov,H L Snoek,B N Ratcliff,D Aston,R Frey,R Stroili,B Lindquist,J Kroseberg,G Marchiori,B Hamilton,D Su,P Lewis,F Di Lodovico,T Schalk,C Campagnari,D J Payne,S Emery,R C Field,P Roudeau,R Ayad,B C Wray,G De Nardo,R Andreassen,D J Bard,A Adametz,M Rotondo,A M Lutz,J Dorfan,M Bellis,G Vasseur,R J Barlow,F Ferroni,A Lusiani,M Mandelkern,D Lindemann,D P Stoker,M Nagel,F F Wilson,A Seiden,P R Burchat,A E Rubin,C Cartaro,L T Kerth,B Spaan,M A Mazzoni,E Gabathuler,E Prencipe,N Gagliardi,A Soffer,V Tisserand,C J Schilling,I M Nugent,R Contri,M K Sullivan,M Franco Sevilla,S J Sekula,J Chauveau,M Negrini,D W G S Leith,T Pulliam,J P Coleman,H H F Choi,G Grosdidier,D Bettoni,C H Cheng,R Faccini,D B Macfarlane,J M Roney,W T Ford,F Simonetto,G Cavoto,J Cochran,A M Gabareen,A J S Smith,S Li,J Garra Tico,V Poireau,P Taras,C Hast,G D Lafferty,A Stocchi,M Bomben,G Simi,F Forti,H Schröder,B G Fulsom,G Lynch,M Munerato,Z J Guo,E I Rosenberg,P Biassoni,T Leddig,S L Wu,K Honscheid,R Kowalewski,A Jawahery,L Vitale,G M Vitug,G Piredda,A V Gritsan,O Grünberg,J Ocariz,U Mallik,A Calcaterra,A Zallo,U Uwer,W Gradl,R Schwierz,V Prasad,J R Fry,S Prell,R Calabrese,T S Miyashita,E Behn,M H Schune,S Sitt,W Park,D Monorchio,E Robutti,E Fioravanti,C Hearty,M L Kocian,M Pappagallo,M Weaver,K T Flood,A Roodman,W R Innes,I Bingham,C Dallapiccola,E Paoloni,R H Schindler,A Lazzaro,M Lo Vetere,A Palano,G Eigen,E Feltresi,H R Band,G Wormser,G P Dubois-Felsmann,T Lueck,M Fritsch,B Oberhof,C Patrignani,R Kroeger,M Posocco,H Ahmed,M A Giorgi,M Rama,G Cibinetto,W S Lockman,F C Porter,I Garzia,P Lund,S Luitz,E M T Puccio,T S Mattison,E Ben-Haim,S Nelson,D J Asgeirsson,A P Wagner,A Y Rakitin,R Gorodeisky,S I Serednyakov,G Rizzo,G Casarosa,B Stugu,R Godang,P Grenier,C L Lee,D Gamba,N B Sinev,M Ebert,J A Mckenna,N Arnaud,S Stracka,C Angelini,R Sacco,M Piccolo,P Ongmongkolkul,F Anulli,J Marks,P C Bloom,S M Spanier,M Gaspero,V Lombardo,В П Дружинин ,A Khan,D Wright ,A Randle-Conde,M J Tibbetts ,J Richman ,D Bailey,L Cremaldi,S Akar,S R Wagner,A Denig ,Ch Yèche ,C Lü ,E Guido,G Hamel De Monchenault,J R Wilson,M Margoni,R M White,W F Wang,A Pérez ,T Gershon ,A Rossi,B Malaescu,F U Bernlochner,S Banerjee ,N Neri,A J Edwards,Y B Pan ,P K Behera,D N Brown,G Cowan,Scott Robertson ,A Salnikov ,C Jessop ,B Meadows ,G Sciolla,D Lange ,H Kim,H Lacker ,Ph Leruste ,O R Long ,X C Lou,M T Graham,M Sigamani,G Jackson,M Perl,J M Izen,J Olsen,J Ernst ,E Graugés ,J E Brau ,A J Martínez ,M Kelsey ,T Latham ,F Martínez-Vidal ,R Waldi,C West ,D Hutchcroft ,H A Neal ,P F Harrison,K Yu Todyshev ,R Sobie ,B A Schumm,T Vazquez Schroeder ,D Kovalskyi,A Gaz,M Morandin,A J Bevan,V Lüth ,D Dujmić ,J Walsh ,M Dubrovin ,M Kobel ,V Blinov ,E Olaiya ,P Patterí ,M R Monge,D Bernard,Dieter Müller

doi:10.1103/physrevd.84.092007

Abstract

We report an analysis of the charmless hadronic decays of charged B meson to the final state K+pi0pi0, using a data sample of 470+/-2.8 million BBbar events collected at the Y(4S) resonance. We observe an excess of signal events, with a significance above 10 standard deviations including systematic uncertainties, and measure the branching fraction and CP asymmetry to be B(B+->K+pi0pi0)=(16.2+/-1.2+/-1.5)x10^-6 and A_CP(B+->K+pi0pi0)=-0.06+/-0.06+/-0.04, where the uncertainties are statistical and systematic respectively. Additionally we study the contributions of the B+->K*(892)+pi0, B+->f0(980)K+ and B+->chic0K+ quasi-two body decays. We report the world's best measurements of the branching fractions and CP asymmetry of the B+->K+pi0pi0 and B+->K*(892)+pi0 channels.

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