We present results on time-dependent CP asymmetries in neutral B decays to several CP eigenstates. The measurements use a data sample of about 88x10(6) Y(4S)-->B (B) over bar decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. We study events in which one neutral B meson is fully reconstructed in a final state containing a charmonium meson and the other B meson is determined to be either a B-0 or (B) over bar (0) from its decay products. The amplitude of the CP asymmetry, which in the standard model is proportional to sin2beta, is derived from the decay-time distributions in such events. We measure sin2beta=0.741+/-0.067(stat)+/-0.034(syst) and \lambda\=0.948+/-0.051(stat)+/-0.030(syst). The magnitude of lambda is consistent with unity, in agreement with the standard model expectation of no direct CP violation in these modes.

Measurement of the CP asymmetry amplitude sin2 beta with B-0 mesons RID C-2728-2008 RID C-3493-2011 RID C-5223-2009 RID C-5719-2008 RID D-1189-2011 RID D-1055-2009 RID A-2675-2009

ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;CALDERINI, GIOVANNI;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;TRIGGIANI, GIUSEPPE;
2002-01-01

Abstract

We present results on time-dependent CP asymmetries in neutral B decays to several CP eigenstates. The measurements use a data sample of about 88x10(6) Y(4S)-->B (B) over bar decays collected between 1999 and 2002 with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. We study events in which one neutral B meson is fully reconstructed in a final state containing a charmonium meson and the other B meson is determined to be either a B-0 or (B) over bar (0) from its decay products. The amplitude of the CP asymmetry, which in the standard model is proportional to sin2beta, is derived from the decay-time distributions in such events. We measure sin2beta=0.741+/-0.067(stat)+/-0.034(syst) and \lambda\=0.948+/-0.051(stat)+/-0.030(syst). The magnitude of lambda is consistent with unity, in agreement with the standard model expectation of no direct CP violation in these modes.
2002
Aubert, B; Boutigny, D; Gaillard, Jm; Hicheur, A; Karyotakis, Y; Lees, Jp; Robbe, P; Tisserand, V; Zghiche, A; Palano, A; Pompili, A; Chen, Jc; Qi, Nd; Rong, G; Wang, P; Zhu, Ys; Eigen, G; Ofte, I; Stugu, B; Abrams, Gs; Borgland, Aw; Breon, Ab; Brown, Dn; Button Shafer, J; Cahn, Rn; Charles, E; Gill, Ms; Gritsan, Av; Groysman, Y; Jacobsen, Rg; Kadel, Rw; Kadyk, J; Kerth, Lt; Kolomensky, Yg; Kral, Jf; Leclerc, C; Levi, Me; Lynch, G; Mir, Lm; Oddone, Pj; Orimoto, Tj; Pripstein, M; Roe, Na; Romosan, A; Ronan, Mt; Shelkov, Vg; Telnov, Av; Wenzel, Wa; Harrison, Tj; Hawkes, Cm; Knowles, Dj; O'Neale, Sw; Penny, Rc; Watson, At; Watson, Nk; Deppermann, T; Goetzen, K; Koch, H; Lewandowski, B; Peters, K; Schmuecker, H; Steinke, M; Barlow, Nr; Bhimji, W; Boyd, Jt; Chevalier, N; Clark, Pj; Cottingham, Wn; Mackay, C; Wilson, Ff; Abe, K; Hearty, C; Mattison, Ts; Mckenna, Ja; Thiessen, D; Jolly, S; Mckemey, Ak; Blinov, Ve; Bukin, Ad; Buzykaev, Ar; Golubev, Vb; Ivanchenko, Vn; Korol, Aa; Kravchenko, Ea; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; Yushkov, An; Best, D; Chao, M; Kirkby, D; Lankford, Aj; Mandelkern, M; Mcmahon, S; Stoker, Dp; Buchanan, C; Chun, S; Hadavand, Hk; Hill, Ej; Macfarlane, Db; Paar, H; Prell, S; Rahatlou, S; Raven, G; Schwanke, U; Sharma, V; Berryhill, Jw; Campagnari, C; Dahmes, B; Hart, Pa; Kuznetsova, N; Levy, Sl; Long, O; Lu, A; Mazur, Ma; Richman, Jd; Verkerke, W; Beringer, J; Eisner, Am; Grothe, M; Heusch, Ca; Lockman, Ws; Pulliam, T; Schalk, T; Schmitz, Re; Schumm, Ba; Seiden, A; Turri, M; Walkowiak, W; Williams, Dc; Wilson, Mg; Chen, E; Dubois Felsmann, Gp; Dvoretskii, A; Hitlin, Dg; Porter, Fc; Ryd, A; Samuel, A; Yang, S; Jayatilleke, S; Mancinelli, G; Meadows, Bt; Sokoloff, Md; Barillari, T; Bloom, P; Ford, Wt; Nauenberg, U; Olivas, A; Rankin, P; Roy, J; Smith, Jg; van Hoek, Wc; Zhang, L; Harton, Jl; Hu, T; Krishnamurthy, M; Soffer, A; Toki, Wh; Wilson, Rj; Zhang, J; Altenburg, D; Brandt, T; Brose, J; Colberg, T; Dickopp, M; Dubitzky, Rs; Hauke, A; Maly, E; Muller Pfefferkorn, R; Otto, S; Schubert, Kr; Schwierz, R; Spaan, B; Wilden, L; Bernard, D; Bonneaud, Gr; Brochard, F; Cohen Tanugi, J; Ferrag, S; T'Jampens, S; Thiebaux, C; Vasileiadis, G; Verderi, M; Anjomshoaa, A; Bernet, R; Khan, A; Lavin, D; Muheim, F; Playfer, S; Swain, Je; Tinslay, J; Falbo, M; Borean, C; Bozzi, C; Piemontese, L; Sarti, A; Treadwell, E; Anulli, F; Baldini Ferroli, R; Calcaterra, A; de Sangro, R; Falciai, D; Finocchiaro, G; Patteri, P; Peruzzi, Im; Piccolo, M; Zallo, A; Bagnasco, S; Buzzo, A; Contri, R; Crosetti, G; Lo Vetere, M; Macri, M; Monge, Mr; Passaggio, S; Pastore, Fc; Patrignani, C; Robutti, E; Santroni, A; Tosi, S; Bailey, S; Morii, M; Bartoldus, R; Grenier, Gj; Mallik, U; Cochran, J; Crawley, Hb; Lamsa, J; Meyer, Wt; Rosenberg, Ei; Yi, J; Davier, M; Grosdidier, G; Hocker, A; Lacker, Hm; Laplace, S; Le Diberder, F; Lepeltier, V; Lutz, Am; Petersen, Tc; Plaszczynski, S; Schune, Mh; Tantot, L; Trincaz Duvoid, S; Wormser, G; Bionta, Rm; Brigljevic, V; Lange, Dj; van Bibber, K; Wright, Dm; Bevan, Aj; Fry, Jr; Gabathuler, E; Gamet, R; George, M; Kay, M; Payne, Dj; Sloane, Rj; Touramanis, C; Aspinwall, Ml; Bowerman, Da; Dauncey, Pd; Egede, U; Eschrich, I; Morton, Gw; Nash, Ja; Sanders, P; Smith, D; Taylor, Gp; Back, Jj; Bellodi, G; Dixon, P; Harrison, Pf; Potter, Rjl; Shorthouse, Hw; Strother, P; Vidal, Pb; Cowan, G; Flaecher, Hu; George, S; Green, Mg; Kurup, A; Marker, Ce; Mcmahon, Tr; Ricciardi, S; Salvatore, F; Vaitsas, G; Winter, Ma; Brown, D; Davis, Cl; Allison, J; Barlow, Rj; Forti, Ac; Jackson, F; Lafferty, Gd; Lyon, Aj; Savvas, N; Weatherall, Jh; Williams, Jc; Farbin, A; Jawahery, A; Lillard, V; Roberts, Da; Schieck, Jr; Blaylock, G; Dallapiccola, C; Flood, Kt; Hertzbach, Ss; Kofler, R; Koptchev, Vb; Moore, Tb; Staengle, H; Willocq, S; Brau, B; Cowan, R; Sciolla, G; Taylor, F; Yamamoto, Rk; Milek, M; Patel, Pm; Palombo, F; Bauer, Jm; Cremaldi, L; Eschenburg, V; Kroeger, R; Reidy, J; Sanders, Da; Summers, Dj; Hast, C; Taras, P; Nicholson, H; Cartaro, C; Cavallo, N; De Nardo, G; Fabozzi, F; Gatto, C; Lista, L; Paolucci, P; Piccolo, D; Sciacca, C; Losecco, Jm; Alsmiller, Jrg; Gabriel, Ta; Brau, J; Frey, R; Iwasaki, M; Potter, Ct; Sinev, Nb; Strom, D; Torrence, E; Colecchia, F; Dorigo, A; Galeazzi, F; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Voci, C; Benayoun, M; Briand, H; Chauveau, J; David, P; de la Vaissiere, C; Del Buono, L; Hamon, O; Leruste, P; Ocariz, J; Pivk, M; Roos, L; Stark, J; Manfredi, Pf; Re, V; Speziali, V; Gladney, L; Guo, Qh; Panetta, J; Angelini, Carlo; Batignani, Giovanni; Bettarini, Stefano; Bondioli, M; Bucci, F; Calderini, Giovanni; Campagna, E; Carpinelli, M; Forti, Francesco; Giorgi, Marcello; Lusiani, A; Marchiori, G; Martinez Vidal, F; Morganti, M; Neri, N; Paoloni, Eugenio; Rama, M; Rizzo, Giuliana; Sandrelli, F; Triggiani, Giuseppe; Walsh, J; Haire, M; Judd, D; Paick, K; Turnbull, L; Wagoner, De; Albert, J; Danielson, N; Elmer, P; Lu, C; Miftakov, V; Olsen, J; Schaffner, Sf; Smith, Ajs; Tumanov, A; Varnes, Ew; Bellini, F; Cavoto, G; del Re, D; Faccini, R; Ferrarotto, F; Ferroni, F; Leonardi, E; Mazzoni, Ma; Morganti, S; Piredda, G; Tehrani, Fs; Serra, M; Voena, C; Christ, S; Wagner, G; Waldi, R; Adye, T; De Groot, N; Franek, B; Geddes, Ni; Gopal, Gp; Xella, Sm; Aleksan, R; Emery, S; Gaidot, A; Giraud, Pf; de Monchenault, Gh; Kozanecki, W; Langer, M; London, Gw; Mayer, B; Schott, G; Serfass, B; Vasseur, G; Yeche, C; Zito, M; Purohit, Mv; Weidemann, Aw; Yumiceva, Fx; Adam, I; Aston, D; Berger, N; Boyarski, Am; Convery, Mr; Coupal, Dp; Dong, D; Dorfan, J; Dunwoodie, W; Field, Rc; Glanzman, T; Gowdy, Sj; Grauges, E; Haas, T; Hadig, T; Halyo, V; Himel, T; Hryn'Ova, T; Huffer, Me; Innes, Wr; Jessop, Cp; Kelsey, Mh; Kim, P; Kocian, Ml; Langenegger, U; Leith, Dwgs; Luitz, S; Luth, V; Lynch, Hl; Marsiske, H; Menke, S; Messner, R; Muller, Dr; O'Grady, Cp; Ozcan, Ve; Perazzo, A; Perl, M; Petrak, S; Quinn, H; Ratcliff, Bn; Robertson, Sh; Roodman, A; Salnikov, Aa; Schietinger, T; Schindler, Rh; Schwiening, J; Simi, G; Snyder, A; Soha, A; Spanier, Sm; Stelzer, J; Su, D; Sullivan, Mk; Tanaka, Ha; Va'Vra, J; Wagner, Sr; Weaver, M; Weinstein, Ajr; Wisniewski, Wj; Wright, Dh; Young, Cc; Burchat, Pr; Cheng, Ch; Meyer, Ti; Roat, C; Henderson, R; Bugg, W; Cohn, H; Izen, Jm; Kitayama, I; Lou, Xc; Bianchi, F; Bona, M; Gamba, D; Bosisio, L; Della Ricca, G; Dittongo, S; Lanceri, L; Poropat, P; Vitale, L; Vuagnin, G; Panvini, Rs; Banerjee, S; Brown, Cm; Fortin, D; Jackson, Pd; Kowalewski, R; Roney, Jm; Band, Hr; Dasu, S; Datta, M; Eichenbaum, Am; Hu, H; Johnson, Jr; Liu, R; Di Lodovico, F; Mohapatra, A; Pan, Y; Prepost, R; Scott, Ij; Sekula, Sj; von Wimmersperg Toeller, Jh; Wu, J; Wu, Sl; Yu, Z; Neal, H.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/75275
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 272
social impact