Skip to main content
eScholarship
Open Access Publications from the University of California

UC Berkeley

UC Berkeley Previously Published Works bannerUC Berkeley

First Observation of CP Violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data.

  • Author(s): Abdesselam, A;
  • Adachi, I;
  • Adametz, A;
  • Adye, T;
  • Ahmed, H;
  • Aihara, H;
  • Akar, S;
  • Alam, MS;
  • Albert, J;
  • Al Said, S;
  • Andreassen, R;
  • Angelini, C;
  • Anulli, F;
  • Arinstein, K;
  • Arnaud, N;
  • Asner, DM;
  • Aston, D;
  • Aulchenko, V;
  • Aushev, T;
  • Ayad, R;
  • Babu, V;
  • Badhrees, I;
  • Bahinipati, S;
  • Bakich, AM;
  • Band, HR;
  • Banerjee, Sw;
  • Barberio, E;
  • Bard, DJ;
  • Barlow, RJ;
  • Batignani, G;
  • Beaulieu, A;
  • Bellis, M;
  • Ben-Haim, E;
  • Bernard, D;
  • Bernlochner, FU;
  • Bettarini, S;
  • Bettoni, D;
  • Bevan, AJ;
  • Bhardwaj, V;
  • Bhuyan, B;
  • Bianchi, F;
  • Biasini, M;
  • Biswal, J;
  • Blinov, VE;
  • Bloom, PC;
  • Bobrov, A;
  • Bomben, M;
  • Bondar, A;
  • Bonneaud, GR;
  • Bonvicini, G;
  • Bozek, A;
  • Bozzi, C;
  • Bračko, M;
  • Briand, H;
  • Browder, TE;
  • Brown, DN;
  • Brown, DN;
  • Bünger, C;
  • Burchat, PR;
  • Buzykaev, AR;
  • Calabrese, R;
  • Calcaterra, A;
  • Calderini, G;
  • Carpinelli, M;
  • Cartaro, C;
  • Casarosa, G;
  • Cenci, R;
  • Červenkov, D;
  • Chang, P;
  • Chao, DS;
  • Chauveau, J;
  • Cheaib, R;
  • Chekelian, V;
  • Chen, A;
  • Chen, C;
  • Cheng, CH;
  • Cheon, BG;
  • Chilikin, K;
  • Chistov, R;
  • Cho, K;
  • Chobanova, V;
  • Choi, HHF;
  • Choi, S-K;
  • Chrzaszcz, M;
  • Cibinetto, G;
  • Cinabro, D;
  • Cochran, J;
  • Coleman, JP;
  • Contri, R;
  • Convery, MR;
  • Cowan, G;
  • Cowan, R;
  • Cremaldi, L;
  • Dalseno, J;
  • Dasu, S;
  • Davier, M;
  • Davis, CL;
  • De Mori, F;
  • De Nardo, G;
  • Denig, AG;
  • Derkach, D;
  • de Sangro, R;
  • Dey, B;
  • Di Lodovico, F;
  • Dingfelder, J;
  • Dittrich, S;
  • Doležal, Z;
  • Dorfan, J;
  • Drásal, Z;
  • Drutskoy, A;
  • Druzhinin, VP;
  • Dubois-Felsmann, GP;
  • Dunwoodie, W;
  • Dutta, D;
  • Ebert, M;
  • Echenard, B;
  • Eidelman, S;
  • Eigen, G;
  • Eisner, AM;
  • Emery, S;
  • Ernst, JA;
  • Faccini, R;
  • Farhat, H;
  • Fast, JE;
  • Feindt, M;
  • Ferber, T;
  • Ferrarotto, F;
  • Ferroni, F;
  • Field, RC;
  • Filippi, A;
  • Finocchiaro, G;
  • Fioravanti, E;
  • Flood, KT;
  • Ford, WT;
  • Forti, F;
  • Franco Sevilla, M;
  • Fritsch, M;
  • Fry, JR;
  • Fulsom, BG;
  • Gabathuler, E;
  • Gabyshev, N;
  • Gamba, D;
  • Garmash, A;
  • Gary, JW;
  • Garzia, I;
  • Gaspero, M;
  • Gaur, V;
  • Gaz, A;
  • Gershon, TJ;
  • Getzkow, D;
  • Gillard, R;
  • Li Gioi, L;
  • Giorgi, MA;
  • Glattauer, R;
  • Godang, R;
  • Goh, YM;
  • Goldenzweig, P;
  • Golob, B;
  • Golubev, VB;
  • Gorodeisky, R;
  • Gradl, W;
  • Graham, MT;
  • Grauges, E;
  • Griessinger, K;
  • Gritsan, AV;
  • Grosdidier, G;
  • Grünberg, O;
  • Guttman, N;
  • Haba, J;
  • Hafner, A;
  • Hamilton, B;
  • Hara, T;
  • Harrison, PF;
  • Hast, C;
  • Hayasaka, K;
  • Hayashii, H;
  • Hearty, C;
  • He, XH;
  • Hess, M;
  • Hitlin, DG;
  • Hong, TM;
  • Honscheid, K;
  • Hou, W-S;
  • Hsiung, YB;
  • Huard, Z;
  • Hutchcroft, DE;
  • Iijima, T;
  • Inguglia, G;
  • Innes, WR;
  • Ishikawa, A;
  • Itoh, R;
  • Iwasaki, Y;
  • Izen, JM;
  • Jaegle, I;
  • Jawahery, A;
  • Jessop, CP;
  • Joffe, D;
  • Joo, KK;
  • Julius, T;
  • Kang, KH;
  • Kass, R;
  • Kawasaki, T;
  • Kerth, LT;
  • Khan, A;
  • Kiesling, C;
  • Kim, DY;
  • Kim, JB;
  • Kim, JH;
  • Kim, KT;
  • Kim, P;
  • Kim, SH;
  • Kim, YJ;
  • King, GJ;
  • Kinoshita, K;
  • Ko, BR;
  • Koch, H;
  • Kodyš, P;
  • Kolomensky, Yu G;
  • Korpar, S;
  • Kovalskyi, D;
  • Kowalewski, R;
  • Kravchenko, EA;
  • Križan, P;
  • Krokovny, P;
  • Kuhr, T;
  • Kumar, R;
  • Kuzmin, A;
  • Kwon, Y-J;
  • Lacker, HM;
  • Lafferty, GD;
  • Lanceri, L;
  • Lange, DJ;
  • Lankford, AJ;
  • Latham, TE;
  • Leddig, T;
  • Le Diberder, F;
  • Lee, DH;
  • Lee, IS;
  • Lee, MJ;
  • Lees, JP;
  • Leith, DWGS;
  • Leruste, Ph;
  • Lewczuk, MJ;
  • Lewis, P;
  • Libby, J;
  • Lockman, WS;
  • Long, O;
  • Lopes Pegna, D;
  • LoSecco, JM;
  • Lou, XC;
  • Lueck, T;
  • Luitz, S;
  • Lukin, P;
  • Luppi, E;
  • Lusiani, A;
  • Luth, V;
  • Lutz, AM;
  • Lynch, G;
  • MacFarlane, DB;
  • Malaescu, B;
  • Mallik, U;
  • Manoni, E;
  • Marchiori, G;
  • Margoni, M;
  • Martellotti, S;
  • Martinez-Vidal, F;
  • Masuda, M;
  • Mattison, TS;
  • Matvienko, D;
  • McKenna, JA;
  • Meadows, BT;
  • Miyabayashi, K;
  • Miyashita, TS;
  • Miyata, H;
  • Mizuk, R;
  • Mohanty, GB;
  • Moll, A;
  • Monge, MR;
  • Moon, HK;
  • Morandin, M;
  • Muller, DR;
  • Mussa, R;
  • Nakano, E;
  • Nakazawa, H;
  • Nakao, M;
  • Nanut, T;
  • Nayak, M;
  • Neal, H;
  • Neri, N;
  • Nisar, NK;
  • Nishida, S;
  • Nugent, IM;
  • Oberhof, B;
  • Ocariz, J;
  • Ogawa, S;
  • Okuno, S;
  • Olaiya, EO;
  • Olsen, J;
  • Ongmongkolkul, P;
  • Onorato, G;
  • Onuchin, AP;
  • Onuki, Y;
  • Ostrowicz, W;
  • Oyanguren, A;
  • Pakhlova, G;
  • Pakhlov, P;
  • Palano, A;
  • Pal, B;
  • Palombo, F;
  • Pan, Y;
  • Panduro Vazquez, W;
  • Paoloni, E;
  • Park, CW;
  • Park, H;
  • Passaggio, S;
  • Patel, PM;
  • Patrignani, C;
  • Patteri, P;
  • Payne, DJ;
  • Pedlar, TK;
  • Peimer, DR;
  • Peruzzi, IM;
  • Pesántez, L;
  • Pestotnik, R;
  • Petrič, M;
  • Piccolo, M;
  • Piemontese, L;
  • Piilonen, LE;
  • Pilloni, A;
  • Piredda, G;
  • Playfer, S;
  • Poireau, V;
  • Porter, FC;
  • Posocco, M;
  • Prasad, V;
  • Prell, S;
  • Prepost, R;
  • Puccio, EMT;
  • Pulliam, T;
  • Purohit, MV;
  • Pushpawela, BG;
  • Rama, M;
  • Randle-Conde, A;
  • Ratcliff, BN;
  • Raven, G;
  • Ribežl, E;
  • Richman, JD;
  • Ritchie, JL;
  • Rizzo, G;
  • Roberts, DA;
  • Robertson, SH;
  • Röhrken, M;
  • Roney, JM;
  • Roodman, A;
  • Rossi, A;
  • Rostomyan, A;
  • Rotondo, M;
  • Roudeau, P;
  • Sacco, R;
  • Sakai, Y;
  • Sandilya, S;
  • Santelj, L;
  • Santoro, V;
  • Sanuki, T;
  • Sato, Y;
  • Savinov, V;
  • Schindler, RH;
  • Schneider, O;
  • Schnell, G;
  • Schroeder, T;
  • Schubert, KR;
  • Schumm, BA;
  • Schwanda, C;
  • Schwartz, AJ;
  • Schwitters, RF;
  • Sciacca, C;
  • Seiden, A;
  • Sekula, SJ;
  • Senyo, K;
  • Seon, O;
  • Serednyakov, SI;
  • Sevior, ME;
  • Shapkin, M;
  • Shebalin, V;
  • Shen, CP;
  • Shibata, T-A;
  • Shiu, J-G;
  • Simard, M;
  • Simi, G;
  • Simon, F;
  • Simonetto, F;
  • Skovpen, Yu I;
  • Smith, AJS;
  • Smith, JG;
  • Snyder, A;
  • So, RY;
  • Sobie, RJ;
  • Soffer, A;
  • Sohn, Y-S;
  • Sokoloff, MD;
  • Sokolov, A;
  • Solodov, EP;
  • Solovieva, E;
  • Spaan, B;
  • Spanier, SM;
  • Starič, M;
  • Stocchi, A;
  • Stroili, R;
  • Stugu, B;
  • Su, D;
  • Sullivan, MK;
  • Sumihama, M;
  • Sumisawa, K;
  • Sumiyoshi, T;
  • Summers, DJ;
  • Sun, L;
  • Tamponi, U;
  • Taras, P;
  • Tasneem, N;
  • Teramoto, Y;
  • Tisserand, V;
  • Todyshev, K Yu;
  • Toki, WH;
  • Touramanis, C;
  • Trabelsi, K;
  • Tsuboyama, T;
  • Uchida, M;
  • Uglov, T;
  • Unno, Y;
  • Uno, S;
  • Usov, Y;
  • Uwer, U;
  • Vahsen, SE;
  • Van Hulse, C;
  • Vanhoefer, P;
  • Varner, G;
  • Vasseur, G;
  • Va'vra, J;
  • Verderi, M;
  • Vinokurova, A;
  • Vitale, L;
  • Vorobyev, V;
  • Voß, C;
  • Wagner, MN;
  • Wagner, SR;
  • Waldi, R;
  • Walsh, JJ;
  • Wang, CH;
  • Wang, M-Z;
  • Wang, P;
  • Watanabe, Y;
  • West, CA;
  • Williams, KM;
  • Wilson, FF;
  • Wilson, JR;
  • Wisniewski, WJ;
  • Won, E;
  • Wormser, G;
  • Wright, DM;
  • Wu, SL;
  • Wulsin, HW;
  • Yamamoto, H;
  • Yamaoka, J;
  • Yashchenko, S;
  • Yuan, CZ;
  • Yusa, Y;
  • Zallo, A;
  • Zhang, CC;
  • Zhang, ZP;
  • Zhilich, V;
  • Zhulanov, V;
  • Zupanc, A;
  • BaBar Collaboration;
  • Belle Collaboration
  • et al.
Abstract

We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(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)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{f}S=+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 ¯]^{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.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View