학술논문

First Observation of CP Violation in B0->D(*)CP h0 Decays by a Combined Time-Dependent Analysis of BaBar and Belle Data
Document Type
Working Paper
Author
BaBar, TheCollaborations, BelleAbdesselam, A.Adachi, I.Adametz, A.Adye, T.Ahmed, H.Aihara, H.Akar, S.Alam, M. S.Albert, J.Said, S. AlAndreassen, R.Angelini, C.Anulli, F.Arinstein, K.Arnaud, N.Asner, D. M.Aston, D.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bahinipati, S.Bakich, A. M.Band, H. R.Banerjee, Sw.Barberio, E.Bard, D. J.Barlow, R. J.Batignani, G.Beaulieu, A.Bellis, M.Ben-Haim, E.Bernard, D.Bernlochner, F. U.Bettarini, S.Bettoni, D.Bevan, A. J.Bhardwaj, V.Bhuyan, B.Bianchi, F.Biasini, M.Biswal, J.Blinov, V. E.Bloom, P. C.Bobrov, A.Bomben, M.Bondar, A.Bonneaud, G. R.Bonvicini, G.Bozek, A.Bozzi, C.Bracko, M.Briand, H.Browder, T. E.Brown, D. N.Bünger, C.Burchat, P. R.Buzykaev, A. R.Calabrese, R.Calcaterra, A.Calderini, G.Carpinelli, M.Cartaro, C.Casarosa, G.Cenci, R.Cervenkov, D.Chang, P.Chao, D. S.Chauveau, J.Cheaib, R.Chekelian, V.Chen, A.Chen, C.Cheng, C. H.Cheon, B. G.Chilikin, K.Chistov, R.Cho, K.Chobanova, V.Choi, H. H. F.Choi, S. -K.Chrzaszcz, M.Cibinetto, G.Cinabro, D.Cochran, J.Coleman, J. P.Contri, R.Convery, M. R.Cowan, G.Cowan, R.Cremaldi, L.Dalseno, J.Dasu, S.Davier, M.Davis, C. L.De Mori, F.De Nardo, G.Denig, A. G.Derkach, D.de Sangro, R.Dey, B.Di Lodovico, F.Dingfelder, J.Dittrich, S.Dolezal, Z.Dorfan, J.Drasal, Z.Drutskoy, A.Druzhinin, V. P.Dubois-Felsmann, G. P.Dunwoodie, W.Dutta, D.Ebert, M.Echenard, B.Eidelman, S.Eigen, G.Eisner, A. M.Emery, S.Ernst, J. A.Faccini, R.Farhat, H.Fast, J. E.Feindt, M.Ferber, T.Ferrarotto, F.Ferroni, F.Field, R. C.Filippi, A.Finocchiaro, G.Fioravanti, E.Flood, K. T.Ford, W. T.Forti, F.Sevilla, M. FrancoFritsch, M.Fry, J. R.Fulsom, B. G.Gabathuler, E.Gabyshev, N.Gamba, D.Garmash, A.Gary, J. W.Garzia, I.Gaspero, M.Gaur, V.Gaz, A.Gershon, T. J.Getzkow, D.Gillard, R.Gioi, L. LiGiorgi, M. A.Glattauer, R.Godang, R.Goh, Y. M.Goldenzweig, P.Golob, B.Golubev, V. B.Gorodeisky, R.Gradl, W.Graham, M. T.Grauges, E.Griessinger, K.Gritsan, A. V.Grosdidier, G.Grünberg, O.Guttman, N.Haba, J.Hafner, A.Hamilton, B.Hara, T.Harrison, P. F.Hast, C.Hayasaka, K.Hayashii, H.Hearty, C.He, X. H.Hess, M.Hitlin, D. G.Hong, T. M.Honscheid, K.Hou, W. -S.Hsiung, Y. B.Huard, Z.Hutchcroft, D. E.Iijima, T.Inguglia, G.Innes, W. R.Ishikawa, A.Itoh, R.Iwasaki, Y.Izen, J. M.Jaegle, I.Jawahery, A.Jessop, C. P.Joffe, D.Joo, K. K.Julius, T.Kang, K. H.Kass, R.Kawasaki, T.Kerth, L. T.Khan, A.Kiesling, C.Kim, D. Y.Kim, J. B.Kim, J. H.Kim, K. T.Kim, P.Kim, S. H.Kim, Y. J.King, G. J.Kinoshita, K.Ko, B. R.Koch, H.Kodys, P.Kolomensky, Yu. G.Korpar, S.Kovalskyi, D.Kowalewski, R.Kravchenko, E. A.Krizan, P.Krokovny, P.Kuhr, T.Kumar, R.Kuzmin, A.Kwon, Y. -J.Lacker, H. M.Lafferty, G. D.Lanceri, L.Lange, D. J.Lankford, A. J.Latham, T. E.Leddig, T.Diberder, F. LeLee, D. H.Lee, I. S.Lee, M. J.Lees, J. P.Leith, D. W. G. S.Leruste, Ph.Lewczuk, M. J.Lewis, P.Libby, J.Lockman, W. S.Long, O.Pegna, D. LopesLoSecco, J. M.Lou, X. C.Lueck, T.Luitz, S.Lukin, P.Luppi, E.Lusiani, A.Luth, V.Lutz, A. M.Lynch, G.MacFarlane, D. B.Malaescu, B.Mallik, U.Manoni, E.Marchiori, G.Margoni, M.Martellotti, S.Martinez-Vidal, F.Masuda, M.Mattison, T. S.Matvienko, D.McKenna, J. A.Meadows, B. T.Miyabayashi, K.Miyashita, T. S.Miyata, H.Mizuk, R.Mohanty, G. B.Moll, A.Monge, M. R.Moon, H. K.Morandin, M.Muller, D. R.Mussa, R.Nakano, E.Nakazawa, H.Nakao, M.Nanut, T.Nayak, M.Neal, H.Neri, N.Nisar, N. K.Nishida, S.Nugent, I. M.Oberhof, B.Ocariz, J.Ogawa, S.Okuno, S.Olaiya, E. O.Olsen, J.Ongmongkolkul, P.Onorato, G.Onuchin, A. P.Onuki, Y.Ostrowicz, W.Oyanguren, A.Pakhlova, G.Pakhlov, P.Palano, A.Pal, B.Palombo, F.Pan, Y.Vazquez, W. PanduroPaoloni, E.Park, C. W.Park, H.Passaggio, S.Patel, P. M.Patrignani, C.Patteri, P.Payne, D. J.Pedlar, T. K.Peimer, D. R.Peruzzi, I. M.Pesantez, L.Pestotnik, R.Petric, M.Piccolo, M.Piemontese, L.Piilonen, L. E.Pilloni, A.Piredda, G.Playfer, S.Poireau, V.Porter, F. C.Posocco, M.Prasad, V.Prell, S.Prepost, R.Puccio, E. M. T.Pulliam, T.Purohit, M. V.Pushpawela, B. G.Rama, M.Randle-Conde, A.Ratcliff, B. N.Raven, G.Ribezl, E.Richman, J. D.Ritchie, J. L.Rizzo, G.Roberts, D. A.Robertson, S. H.Röhrken, M.Roney, J. M.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, R. H.Schneider, O.Schnell, G.Schroeder, T.Schubert, K. R.Schumm, B. A.Schwanda, C.Schwartz, A. J.Schwitters, R. F.Sciacca, C.Seiden, A.Sekula, S. J.Senyo, K.Seon, O.Serednyakov, S. I.Sevior, M. E.Shapkin, M.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Simard, M.Simi, G.Simon, F.Simonetto, F.Skovpen, Yu. I.Smith, A. J. S.Smith, J. G.Snyder, A.So, R. Y.Sobie, R. J.Soffer, A.Sohn, Y. -S.Sokoloff, M. D.Sokolov, A.Solodov, E. P.Solovieva, E.Spaan, B.Spanier, S. M.Staric, M.Stocchi, A.Stroili, R.Stugu, B.Su, D.Sullivan, M. K.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Summers, D. J.Sun, L.Tamponi, U.Taras, P.Tasneem, N.Teramoto, Y.Tisserand, V.Todyshev, K. Yu.Toki, W. H.Touramanis, C.Trabelsi, K.Tsuboyama, T.Uchida, M.Uglov, T.Unno, Y.Uno, S.Usov, Y.Uwer, U.Vahsen, S. E.Van Hulse, C.Vanhoefer, P.Varner, G.Vasseur, G.Va'vra, J.Verderi, M.Vinokurova, A.Vitale, L.Vorobyev, V.Voss, C.Wagner, M. N.Wagner, S. R.Waldi, R.Walsh, J. J.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.West, C. A.Williams, K. M.Wilson, F. F.Wilson, J. R.Wisniewski, W. J.Won, E.Wormser, G.Wright, D. M.Wu, S. L.Wulsin, H. W.Yamamoto, H.Yamaoka, J.Yashchenko, S.Yuan, C. Z.Yusa, Y.Zallo, A.Zhang, C. C.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
Source
Subject
High Energy Physics - Experiment
Language
Abstract
We report a measurement of the time-dependent CP asymmetry of B0->D(*)CP h0 decays, where the light neutral hadron h0 is a pi0, eta or omega meson, and the neutral D meson is reconstructed in the CP eigenstates K+ K-, K0S pi0 or K0S omega. The measurement is performed combining the final data samples collected at the Y(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 BB pairs recorded by the BaBar detector and ( 772 +/- 11 ) x 10^6, BB pairs recorded by the Belle detector. We measure the CP asymmetry parameters -eta_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 B0->D(*)CP h0 decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.
Comment: 9 pages, 2 figures, submitted to Physical Review Letters