First Observation of CP Violation in B0->D(*)CP h0 Decays by a Combined Time-Dependent Analysis of BaBar and Belle Data

A Abdesselam,I Adachi,A Adametz, T Adye,H Ahmed,H Aihara,S Akar,M S Alam,Jacques Albert,S Al Said,R Andreassen,C Angelini, F Anulli,K Arinstein,N Arnaud,D M Asner,D Aston,V Aulchenko,T Aushev,R Ayad, V Babu,I Badhrees, S Bahinipati,A M Bakich, H R Band,Sw Banerjee, E Barberio, D J Bard, R J Barlow,G Batignani, A Beaulieu,M Bellis,E Benhaim, D Bernard,F U Bernlochner,S Bettarini,D Bettoni,A J Bevan,V Bhardwaj,B Bhuyan,F Bianchi,M Biasini, J Biswal,V E Blinov, P C Bloom,A Bobrov,M Bomben,A Bondar,G R Bonneaud,G Bonvicini,A Bozek, C Bozzi,M Bracko,H Briand,T E Browder,D N Brown, C Bunger,P R Burchat,A R Buzykaev,R Calabrese,A Calcaterra, G Calderini,M Carpinelli, C Cartaro,G Casarosa,R Cenci, D Cervenkov,P Chang, D S Chao,J Chauveau, R Cheaib,V Chekelian,A Chen,Chunhui Chen, C H Cheng,B G Cheon,K Chilikin,R Chistov,K Cho,V Chobanova,H H F Choi,S K Choi, M Chrzaszcz,G Cibinetto,D Cinabro, J Cochran, J P Coleman,R Contri,M R Convery, G Cowan,R Cowan, L Cremaldi,J Dalseno, S Dasu,M Davier,C L Davis,F De Mori,G De Nardo, A G Denig,D Derkach,R De Sangro,B Dey,F Di Lodovico, J Dingfelder, S Dittrich,Z Doležal, J Dorfan,Z Drasal,A Drutskoy, V P Druzhinin,G P Duboisfelsmann,W Dunwoodie, D Dutta,M Ebert, B Echenard,S Eidelman,G Eigen,A M Eisner,S Emery,J Ernst,R Faccini,H Farhat,J Fast, M Feindt,T Ferber,F Ferrarotto,F Ferroni,R C Field,A Filippi, G Finocchiaro,E Fioravanti,K T Flood, W T Ford, F Forti,M Franco Sevilla,M Fritsch,J R Fry,B G Fulsom, E Gabathuler,N Gabyshev, D Gamba,A Garmash,J W Gary, I Garzia,M Gaspero,V Gaur, A Gaz, T Gershon, D Getzkow,R Gillard,L Li Gioi,M A Giorgi, R Glattauer, R Godang,Y M Goh, P Goldenzweig,B Golob,V B Golubev, R Gorodeisky,W Gradl,M T Graham,E Grauges, K Griessinger, A V Gritsan,G Grosdidier, O Grunberg, N Guttman,J Haba,A Hafner,B Hamilton,T Hara, P F Harrison, C Hast,K Hayasaka,H Hayashii, C Hearty,X H He,M Hess,D G Hitlin, T M Hong,K Honscheid, W S Hou,Y B Hsiung, Z Huard,D E Hutchcroft, T Iijima,G Inguglia,W R Innes, A Ishikawa,R Itoh, Y Iwasaki, J M Izen, I Jaegle,A Jawahery, C P Jessop, D Joffe,K K Joo,T Julius, K H Kang,R Kass, Tohru Kawasaki,L T Kerth, Ahlia N Khan,C Kiesling,Do Young Kim, J H Kim,K T Kim,Philip Kim,S H Kim, Y J Kim,G J King, K Kinoshita,B R Ko,H Koch, P Kodys,Yu G Kolomensky,S Korpar, D Kovalskyi, R Kowalewski, E A Kravchenko,P Križan,P Krokovny, T Kuhr,Ravi Kumar, A Kuzmin,Y J Kwon, H M Lacker,G D Lafferty,L Lanceri, D J Lange, A J Lankford,T E Latham,T Leddig,F Le Diberder,Do Hoon Lee,Im Soon Lee,M J Lee,J P Lees,D W G S Leith,Ph Leruste,M J Lewczuk,P Lewis,J Libby, W S Lockman,O Long,D Lopes Pegna,J M Losecco,X C Lou,T Lueck,S Luitz,P Lukin, E Luppi,A Lusiani, V Luth,A M Lutz,G Lynch,D B Macfarlane, B Malaescu,U Mallik,E Manoni, G Marchiori, M Margoni,S Martellotti,F Martinezvidal, Mari Masuda,T S Mattison,D Matvienko,J A Mckenna,B T Meadows,K Miyabayashi,T S Miyashita,H Miyata,R Mizuk, G B Mohanty, A Moll,M R Monge, H K Moon,M Morandin,D R Muller,R Mussa,E Nakano,H Nakazawa,M Nakao,T Nanut, Mahesh Nayak, H A Neal, N Neri,N K Nisar,S Nishida, I M Nugent, B Oberhof, J Ocariz,S Ogawa,S Okuno, E O Olaiya, J Olsen,P Ongmongkolkul,G Onorato,A P Onuchin, Y Onuki,W Ostrowicz,A Oyanguren,G Pakhlova,P Pakhlov,A Palano,B K Pal,F Palombo, Y Pan,W Panduro Vazquez,E Paoloni,C W Park,Hyangkyu Park, S Passaggio,P M Patel, C Patrignani,P Patteri,D J Payne, T K Pedlar, D R Peimer,I M Peruzzi, L Pesantez,R Pestotnik, M Petric,M Piccolo,L Piemontese,L E Piilonen,A Pilloni,G Piredda,S Playfer,V Poireau, F C Porter,M Posocco, V D Prasad,S Prell,R Prepost,E M T Puccio,T Pulliam, M V Purohit, B G Pushpawela,M Rama, A Randleconde,B N Ratcliff,G Raven, E Ribežl, J D Richman,J L Ritchie,G Rizzo,D A Roberts, S H Robertson, M Rohrken,J M Roney,A Roodman, A M Rossi, A Rostomyan,M Rotondo,P Roudeau,R Sacco,Y Sakai,S Sandilya, L Santelj,V Santoro,T Sanuki,Y Sato, V Savinov, R H Schindler,O Schneider, G Schnell,T Schroeder, K R Schubert, B A Schumm,C Schwanda,A J Schwartz,R F Schwitters,C Sciacca, A Seiden, S J Sekula,K Senyo,O Seon,S I Serednyakov,M E Sevior,M Shapkin,V Shebalin, C P Shen,T A Shibata, J G Shiu,M Simard,G Simi, F Simon, F Simonetto,Yu I Skovpen,A J S Smith,J G Smith,A Snyder,R Y So, R Sobie, A Soffer,Y S Sohn,M D Sokoloff,A V Sokolov,E P Solodov, E Solovieva,B Spaan,S M Spanier,M Staric, A Stocchi,R Stroili, B Stugu, D Su,M K Sullivan,M Sumihama,K Sumisawa,T Sumiyoshi, D J Summers,Luyan Sun,U Tamponi,P Taras,N Tasneem,Y Teramoto,V Tisserand,K Yu Todyshev,W H Toki,C Touramanis,K Trabelsi,Toru Tsuboyama,M Uchida,T Uglov, Y Unno,S Uno,Yu A Usov,U Uwer, S Vahsen, C Van Hulse,P Vanhoefer, G Varner, G Vasseur, J Va Vra,M Verderi, A Vinokurova,L Vitale,V Vorobyev,C Vos, M N Wagner, S R Wagner,R Waldi, J Walsh, C H Wang,M Z Wang,Penghui Wang,Yusuke Watanabe,C A West,K M Williams, F F Wilson, J R Wilson,W J Wisniewski,E Won,G Wormser,D M Wright,Sau Lan Wu,H W Wulsin,H Yamamoto, J Yamaoka, S Yashchenko, C Z Yuan,Y Yusa,A Zallo, C C Zhang, Z P Zhang,V Zhilich,V Zhulanov, A Zupanc

PHYSICAL REVIEW LETTERS（2015）

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摘要

We report a measurement of the time-dependent CP asymmetry of (B) over bar (0) -> D(CP)((*))h(0) decays, where the light neutral hadron h(0) is a pi(0), eta , or omega meson, and the neutral D meson is reconstructed in the CP eigenstates K+K-, K-S(0)pi(0) or K-S(0)omega. The measurement is performed combining the final data samples collected at the Upsilon(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471 +/- 3) x 10(6) B (B) over bar pairs recorded by the BABAR detector and (772 +/- 11) x 10(6) B (B) over bar pairs recorded by the Belle detector. We measure the CP asymmetry parameters -eta S-f = +0.66 +/- 0.10(stat) +/- 0.06(syst) and C = -0.02 +/- 0.07(stat) +/- 0.03(syst). These results correspond to the first observation of CP violation in (B) over bar (0) -> D(CP)((*))h(0) decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

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cp violation,belle data,time-dependent

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