Observation of CP violation in B→η′K0 decays

Aubert, B; Bona, M; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J; Poireau, V; Tisserand, V; Zghiche, A; Grauges, E; Palano, A; Chen, J; Nd, Q; Rong, G; Wang, P; Zhu, Y; Eigen, G; Ofte, I; Stugu, B; Abrams, G; Battaglia, M; Brown, D; Button Shafer, J; Cahn, R; Charles, E; Gill, M; Groysman, Y; Jacobsen, R; Kadyk, J; Kerth, L; Kolomensky, Y; Kukartsev, G; Pegna, D; Lynch, G; Mir, L; Orimoto, T; Pripstein, M; Roe, N; Ronan, M; Wenzel, W; Sanchez, P; Barrett, M; Ford, K; Harrison, T; Hart, A; Hawkes, C; Watson, A; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Peters, K; Schroeder, T; Steinke, M; Boyd, J; Burke, J; Cottingham, W; Walker, D; Asgeirsson, D; Cuhadar Donszelmann, T; Fulsom, B; Hearty, C; Knecht, N; Mattison, T; Mckenna, J; Khan, A; Kyberd, P; Saleem, M; Sherwood, D; Teodorescu, L; Blinov, V; Bukin, A; Druzhinin, V; Golubev, V; Onuchin, A; Serednyakov, S; Skovpen, Y; Solodov, E; Todyshev, K; Best, D; Bondioli, M; Bruinsma, M; Chao, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, A; Lund, P; Mandelkern, M; Roethel, W; Stoker, D; Abachi, S; Buchanan, C; Foulkes, S; Gary, J; Long, O; Shen, B; Wang, K; Zhang, L; Hadavand, H; Hill, E; Paar, H; Rahatlou, S; Sharma, V; Berryhill, J; Campagnari, C; Cunha, A; Dahmes, B; Hong, T; Kovalskyi, D; Richman, J; Beck, T; Eisner, A; Flacco, C; Heusch, C; Kroseberg, J; Lockman, W; Nesom, G; Schalk, T; Schumm, B; Seiden, A; Spradlin, P; Williams, D; Wilson, M; Albert, J; Chen, E; Cheng, C; Dvoretskii, A; Fang, F; Hitlin, D; Narsky, I; Piatenko, T; Porter, F; Mancinelli, G; Meadows, B; Mishra, K; Sokoloff, M; Blanc, F; Bloom, P; Chen, S; Ford, W; Hirschauer, J; Kreisel, A; Nagel, M; Nauenberg, U; Olivas, A; Ruddick, W; Smith, J; Ulmer, K; Wagner, S; Zhang, J; Chen, A; Eckhart, E; Soffer, A; Toki, W; Wilson, R; Winklmeier, F; Zeng, Q; Altenburg, D; Feltresi, E; Hauke, A; Jasper, H; Merkel, J; Petzold, A; Spaan, B; Brandt, T; Klose, V; Lacker, H; Mader, W; Nogowski, R; Schubert, J; Schubert, K; Schwierz, R; Sundermann, J; Volk, A; Bernard, D; Bonneaud, G; Latour, E; Thiebaux, C; Verderi, M; Clark, P; Gradl, W; Muheim, F; Playfer, S; Robertson, A; Xie, Y; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Luppi, E; Negrini, M; Petrella, A; Piemontese, L; Prencipe, E; Anulli, F; Baldini Ferroli, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Pacetti, S; Patteri, P; Peruzzi, I; Piccolo, M; Rama, M; Zallo, A; Buzzo, A; Contri, R; Lo Vetere, M; Macri, M; Monge, M; Passaggio, S; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Brandenburg, G; Chaisanguanthum, K; Lee, C; Morii, M; J, W; Dubitzky, R; Marks, J; Schenk, S; Uwer, U; Bard, D; Bhimji, W; Bowerman, D; Dauncey, P; Egede, U; Flack, R; Nash, J; Nikolich, M; Vazquez, W; Behera, P; Chai, X; Charles, M; Mallik, U; Meyer, N; Ziegler, V; Cochran, J; Crawley, H; Dong, L; Eyges, V; Meyer, W; Prell, S; Rosenberg, E; Rubin, A; Gritsan, A; Denig, A; Fritsch, M; Schott, G; Arnaud, N; Davier, M; Grosdidier, G; Hocker, A; Lepeltier, V; Le Diberder, F; Lutz, A; Oyanguren, A; Pruvot, S; Rodier, S; Roudeau, P; Schune, M; Serrano, J; Stocchi, A; Wang, W; Wormser, G; Lange, D; Wright, D; Chavez, C; Forster, I; Fry, J; Gabathuler, E; Gamet, R; George, K; Hutchcroft, D; Payne, D; Schofield, K; Touramanis, C; Bevan, A; Clarke, C; Di Lodovico, F; Menges, W; Sacco, R; Cowan, G; Flaecher, H; Hopkins, D; Jackson, P; Mcmahon, T; Salvatore, F; Wren, A; Brown, D; Davis, C; Allison, J; Barlow, N; Barlow, R; Chia, Y; Edgar, C; Lafferty, G; Naisbit, M; Williams, J; Ji, Y; Chen, C; Hulsbergen, W; Jawahery, A; Lae, C; Roberts, D; Simi, G; Blaylock, G; Dallapiccola, C; Hertzbach, S; X, L; Moore, T; Saremi, S; Staengle, H; Cowan, R; Sciolla, G; Sekula, S; Spitznagel, M; Taylor, F; Yamamoto, R; Kim, H; Mclachlin, S; Patel, P; Robertson, S; Lazzaro, A; Lombardo, V; Palombo, F; Bauer, J; Cremaldi, L; Eschenburg, V; Godang, R; Kroeger, R; Sanders, D; Summers, D; Zhao, H; Brunet, S; Cote, D; Simard, M; Taras, P; Viaud, F; Nicholson, H; Cavallo, N; De Nardo, G; Fabozzi, F; Gatto, C; Lista, L; Monorchio, D; Paolucci, P; Piccolo, D; Sciacca, C; Baak, M; Raven, G; Snoek, H; Jessop, C; Losecco, J; Benelli, G; Corwin, L; Gan, K; Honscheid, K; Hufnagel, D; Jackson, P; Kagan, H; Kass, R; Rahimi, A; Regensburger, J; Ter Antonyan, R; Wong, Q; Blount, N; Brau, J; Frey, R; Igonkina, O; Kolb, J; M, L; Potter, C; Rahmat, R; Sinev, N; Strom, D; Strube, J; Torrence, E; Gaz, A; Margoni, M; Morandin, M; Pompili, A; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Voci, C; Benayoun, M; Briand, H; Chauveau, J; David, P; Del Buono, L; de la Vaissiere, C; Hamon, O; Hartfiel, B; Leruste, P; Malcles, J; Ocariz, J; Roos, L; Therin, G; Gladney, L; Biasini, M; Covarelli, R; Angelini, C; Batignani, G; Bettarini, S; Bucci, F; Calderini, G; Carpinelli, M; Cenci, R; Forti, F; Giorgi, M; Lusiani, A; Marchiori, G; Mazur, M; Morganti, M; Neri, N; Paoloni, E; Rizzo, G; Walsh, J; Haire, M; Judd, D; Wagoner, D; Biesiada, J; Danielson, N; Elmer, P; Lau, Y; C, L; Olsen, J; Ajs, S; Telnov, A; Bellini, F; Cavoto, G; D'Orazio, A; del Re, D; Di Marco, E; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Gioi, L; Mazzoni, M; Morganti, S; Piredda, G; Polci, F; Tehrani, F; Voena, C; Ebert, M; Schroder, H; Waldi, R; Adye, T; Franek, B; Olaiya, E; Ricciardi, S; Wilson, F; Aleksan, R; Emery, S; Gaidot, A; Ganzhur, S; de Monchenault GH,; Kozanecki, W; Legendre, M; Vasseur, G; Yeche, C; Zito, M; Chen, X; Liu, H; Park, W; Purohit, M; Wilson, J; Allen, M; Aston, D; Bartoldus, R; Bechtle, P; Berger, N; Claus, R; Coleman, J; Convery, M; Dingfelder, J; Dorfan, J; Dubois Felsmann GP,; Dujmic, D; Dunwoodie, W; Field, R; Glanzman, T; Gowdy, S; Graham, M; Grenier, P; Halyo, V; Hast, C; Hryn'Ova, T; Innes, W; Kelsey, M; Kim, P; Dwgs, L; S, L; Luitz, S; Luth, V; Lynch, H; Macfarlane, D; Marsiske, H; Messner, R; Muller, D; O'Grady, C; Ozcan, V; Perazzo, A; Perl, M; Pulliam, T; Ratcliff, B; Roodman, A; Salnikov, A; Schindler, R; Schwiening, J; Snyder, A; Stelzer, J; D, S; Sullivan, M; Suzuki, K; Swain, S; Thompson, J; Va'Vra, J; van Bakel, N; Wagner, A; Weaver, M; Ajr, W; Wisniewski, W; Wittgen, M; Wright, D; Wulsin, H; Yarritu, A; K, Y; Young, C; Burchat, P; Edwards, A; Majewski, S; Petersen, B; Wilden, L; Ahmed, S; Alam, M; Bula, R; Ernst, J; Jain, V; Pan, B; Saeed, M; Wappler, F; Zain, S; Bugg, W; Krishnamurthy, M; Spanier, S; Eckmann, R; Ritchie, J; Satpathy, A; Schilling, C; Schwitters, R; Izen, J; Lou, X; S, Y; Bianchi, F; Gallo, F; Gamba, D; Bomben, M; Bosisio, L; Cartaro, C; Cossutti, F; Della Ricca, G; Dittongo, S; Lanceri, L; Vitale, L; Azzolini, V; Lopez March, N; Martinez Vidal, F; Banerjee, S; Bhuyan, B; Brown, C; Fortin, D; Hamano, K; Kowalewski, R; Nugent, I; Roney, J; Sobie, R; Back, J; Harrison, P; Latham, T; Mohanty, G; Pappagallo, M; Band, H; Chen, X; Cheng, B; Dasu, S; Datta, M; Flood, K; Hollar, J; Kutter, P; Mellado, B; Mihalyi, A; Pan, Y; Pierini, M; Prepost, R; Sl, W; Z, Y; Neal, H

doi:10.1103/PhysRevLett.98.031801

We present measurements of the time-dependent CP-violation parameters S and C in B0→η′K0 decays. The data sample corresponds to 384×106 BB̄ pairs produced by e+e- annihilation at the Υ(4S). The results are S=0.58±0.10±0.03 and C=-0.16±0.07±0. 03. We observe mixing-induced CP violation with a significance of 5.5 standard deviations in this b→s penguin dominated mode.

Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2007). Observation of CP violation in B→η′K0 decays. PHYSICAL REVIEW LETTERS, 98(3) [10.1103/PhysRevLett.98.031801].