Using the entire sample of 467 x 10(6) Y(4S) -> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the SLAC National Accelerator Laboratory, we perform an analysis of B(+/-) -> DK(+/-) decays, using decay modes in which the neutral D meson decays to either CP-eigenstates or non-CP-eigenstates. We measure the partial decay rate charge asymmetries for CP-even and CP-odd D final states to be A(CP+) = 0.25 +/- 0.06 +/- 0.02 and A(CP-) = 0.09 +/- 0.07 +/- 0.02, respectively, where the first error is the statistical and the second is the systematic uncertainty. The parameter A(CP+) is different from zero with a significance of 3.6 standard deviations, constituting evidence for direct CP violation. We also measure the ratios of the charged-averaged B partial decay rates in CP and non-CP decays, R(CP+) 1.18 +/- 0.09 +/- 0.05 and R(CP-) = 1.07 +/- 0.08 +/- 0.04. We infer frequentist confidence intervals for the angle gamma of the unitarity triangle, for the strong phase difference delta(B), and for the amplitude ratio r(B), which are related to the B(-) -> DK(-) decay amplitude by r(B)e(i(delta B-gamma)) = A(B(-) -> (D) over bar (0)K(-)) = A(B(-) -> (D) over bar (0)K(-))/A(B(-) -> D(0)K(-)). Including statistical and systematic uncertainties, we obtain 0: 24 < rB < 0: 45 ( 0: 06 < rB < 0: 51) and, modulo 180 degrees, 11.3 degrees < gamma < 22.7 degrees or 80.8 degrees < gamma < 99.2 degrees or 157.3 degrees < gamma < 168.7 degrees (7.0 degrees < gamma < 173.0 degrees) at the 68% ( 95%) confidence level.

Measurement of CP observables in B-+/- -> DCPK +/- decays and constraints on the CKM angle gamma

CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;Casarosa G;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2010-01-01

Abstract

Using the entire sample of 467 x 10(6) Y(4S) -> B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the SLAC National Accelerator Laboratory, we perform an analysis of B(+/-) -> DK(+/-) decays, using decay modes in which the neutral D meson decays to either CP-eigenstates or non-CP-eigenstates. We measure the partial decay rate charge asymmetries for CP-even and CP-odd D final states to be A(CP+) = 0.25 +/- 0.06 +/- 0.02 and A(CP-) = 0.09 +/- 0.07 +/- 0.02, respectively, where the first error is the statistical and the second is the systematic uncertainty. The parameter A(CP+) is different from zero with a significance of 3.6 standard deviations, constituting evidence for direct CP violation. We also measure the ratios of the charged-averaged B partial decay rates in CP and non-CP decays, R(CP+) 1.18 +/- 0.09 +/- 0.05 and R(CP-) = 1.07 +/- 0.08 +/- 0.04. We infer frequentist confidence intervals for the angle gamma of the unitarity triangle, for the strong phase difference delta(B), and for the amplitude ratio r(B), which are related to the B(-) -> DK(-) decay amplitude by r(B)e(i(delta B-gamma)) = A(B(-) -> (D) over bar (0)K(-)) = A(B(-) -> (D) over bar (0)K(-))/A(B(-) -> D(0)K(-)). Including statistical and systematic uncertainties, we obtain 0: 24 < rB < 0: 45 ( 0: 06 < rB < 0: 51) and, modulo 180 degrees, 11.3 degrees < gamma < 22.7 degrees or 80.8 degrees < gamma < 99.2 degrees or 157.3 degrees < gamma < 168.7 degrees (7.0 degrees < gamma < 173.0 degrees) at the 68% ( 95%) confidence level.
2010
Sanchez, Pd; Lees, Jp; Poireau, V; Prencipe, E; Tisserand, V; Tico, Jg; Grauges, E; Martinelli, M; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Battaglia, M; Brown, Dn; Hooberman, B; Kerth, Lt; Kolomensky, Yg; Lynch, G; Osipenkov, Il; Tanabe, T; Hawkes, Cm; Watson, At; Koch, H; Schroeder, T; Asgeirsson, Dj; Hearty, C; Mattison, Ts; Mckenna, Ja; Khan, A; Randle Conde, A; Blinov, Ve; Buzykaev, Ar; Druzhinin, Vp; Golubev, Vb; Onuchin, Ap; Serednyakov, Si; Skovpen, Yi; Solodov, Ep; Todyshev, Ky; Yushkov, An; Bondioli, M; Curry, S; Kirkby, D; Lankford, Aj; Mandelkern, M; Martin, Ec; Stoker, Dp; Atmacan, H; Gary, Jw; Liu, F; Long, O; Vitug, Gm; Campagnari, C; Hong, Tm; Kovalskyi, D; Richman, Jd; Eisner, Am; Heusch, Ca; Kroseberg, J; Lockman, Ws; Martinez, Aj; Schalk, T; Schumm, Ba; Seiden, A; Winstrom, Lo; Cheng, Ch; Doll, Da; Echenard, B; Hitlin, Dg; Ongmongkolkul, P; Porter, Fc; Rakitin, Ay; Andreassen, R; Dubrovin, Ms; Mancinelli, G; Meadows, Bt; Sokoloff, Md; Bloom, Pc; Ford, Wt; Gaz, A; Nagel, M; Nauenberg, U; Smith, Jg; Wagner, Sr; Ayad, R; Toki, Wh; Jasper, H; Karbach, Tm; Merkel, J; Petzold, A; Spaan, B; Wacker, K; Kobel, Mj; Schubert, Kr; Schwierz, R; Bernard, D; Verderi, M; Clark, Pj; Playfer, S; Watson, Je; Andreotti, M; Bettoni, D; Bozzi, C; Calabrese, R; Cecchi, A; Cibinetto, G; Fioravanti, E; Franchini, P; Luppi, E; Munerato, M; Negrini, M; Petrella, A; Piemontese, L; Baldini Ferroli, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Nicolaci, M; Pacetti, S; Patteri, P; Peruzzi, Im; Piccolo, M; Rama, M; Zallo, A; Contri, R; Guido, E; Lo Vetere, M; Monge, Mr; Passaggio, S; Patrignani, C; Robutti, E; Tosi, S; Bhuyan, B; Prasad, V; Lee, Cl; Morii, M; Adametz, A; Marks, J; Schenk, S; Uwer, U; Bernlochner, Fu; Ebert, M; Lacker, Hm; Lueck, T; Volk, A; Dauncey, Pd; Tibbetts, M; Behera, Pk; Mallik, U; Chen, C; Cochran, J; Crawley, Hb; Dong, L; Meyer, Wt; Prell, S; Rosenberg, Ei; Rubin, Ae; Gao, Yy; Gritsan, Av; Guo, Zj; Arnaud, N; Davier, M; Derkach, D; da Costa, Jf; Grosdidier, G; Le Diberder, F; Lutz, Am; Malaescu, B; Perez, A; Roudeau, P; Schune, Mh; Serrano, J; Sordini, V; Stocchi, A; Wang, L; Wormser, G; Lange, Dj; Wright, Dm; Bingham, I; Chavez, Ca; Coleman, Jp; Fry, Jr; Gabathuler, E; Gamet, R; Hutchcroft, De; Payne, Dj; Touramanis, C; Bevan, Aj; Di Lodovico, F; Sacco, R; Sigamani, M; Cowan, G; Paramesvaran, S; Wren, Ac; Brown, Dn; Davis, Cl; Denig, Ag; Fritsch, M; Gradl, W; Hafner, A; Alwyn, Ke; Bailey, D; Barlow, Rj; Jackson, G; Lafferty, Gd; West, Tj; Anderson, J; Cenci, R; Jawahery, A; Roberts, Da; Simi, G; Tuggle, Jm; Dallapiccola, C; Salvati, E; Cowan, R; Dujmic, D; Fisher, Ph; Sciolla, G; Zhao, M; Lindemann, D; Patel, Pm; Robertson, Sh; Schram, M; Biassoni, P; Lazzaro, A; Lombardo, V; Palombo, F; Stracka, S; Cremaldi, L; Godang, R; Kroeger, R; Sonnek, P; Summers, Dj; Nguyen, X; Simard, M; Taras, P; De Nardo, G; Monorchio, D; Onorato, G; Sciacca, C; Raven, G; Snoek, Hl; Jessop, Cp; Knoepfel, Kj; Losecco, Jm; Wang, Wf; Corwin, La; Honscheid, K; Kass, R; Morris, Jp; Rahimi, Am; Blount, Nl; Brau, J; Frey, R; Igonkina, O; Kolb, Ja; Rahmat, R; Sinev, Nb; Strom, D; Strube, J; Torrence, E; Castelli, G; Feltresi, E; Gagliardi, N; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simonetto, F; Stroili, R; Ben Haim, E; Bonneaud, Gr; Briand, H; Calderini, Giovanni; Chauveau, J; Hamon, O; Leruste, P; Marchiori, G; Ocariz, J; Prendki, J; Sitt, S; Biasini, M; Manoni, E; Rossi, A; Angelini, Carlo; Batignani, Giovanni; Bettarini, Stefano; Carpinelli, M; Casarosa, G; Cervelli, A; Forti, Francesco; Giorgi, Marcello; Lusiani, A; Neri, N; Paoloni, Eugenio; Rizzo, Giuliana; Walsh, Jj; Pegna, Dl; Lu, C; Olsen, J; Smith, Ajs; Telnov, Av; Anulli, F; Baracchini, E; Cavoto, G; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Gioi, Ll; Mazzoni, Ma; Piredda, G; Renga, F; Hartmann, T; Leddig, T; Schroder, H; Waldi, R; Adye, T; Franek, B; Olaiya, Eo; Wilson, Ff; Emery, S; de Monchenault, Gh; Vasseur, G; Yeche, C; Zito, M; Allen, Mt; Aston, D; Bard, Dj; Bartoldus, R; Benitez, Jf; Cartaro, C; Convery, Mr; Dorfan, J; Dubois Felsmann, Gp; Dunwoodie, W; Field, Rc; Sevilla, Mf; Fulsom, Bg; Gabareen, Am; Graham, Mt; Grenier, P; Hast, C; Innes, Wr; Kelsey, Mh; Kim, H; Kim, P; Kocian, Ml; Leith, Dwgs; Li, S; Lindquist, B; Luitz, S; Luth, V; Lynch, Hl; Macfarlane, Db; Marsiske, H; Muller, Dr; Neal, H; Nelson, S; O'Grady, Cp; Ofte, I; Perl, M; Pulliam, T; Ratcliff, Bn; Roodman, A; Salnikov, Aa; Santoro, V; Schindler, Rh; Schwiening, J; Snyder, A; Su, D; Sullivan, Mk; Sun, S; Suzuki, K; Thompson, Jm; Va'Vra, J; Wagner, Ap; Weaver, M; West, Ca; Wisniewski, Wj; Wittgen, M; Wright, Dh; Wulsin, Hw; Yarritu, Ak; Young, Cc; Ziegler, V; Chen, Xr; Park, W; Purohit, Mv; White, Rm; Wilson, Jr; Sekula, Sj; Bellis, M; Burchat, Pr; Edwards, Aj; Miyashita, Ts; Ahmed, S; Alam, Ms; Ernst, Ja; Pan, B; Saeed, Ma; Zain, Sb; Guttman, N; Soffer, A; Lund, P; Spanier, Sm; Eckmann, R; Ritchie, Jl; Ruland, Am; Schilling, Cj; Schwitters, Rf; Wray, Bc; Izen, Jm; Lou, Xc; Bianchi, F; Gamba, D; Pelliccioni, M; Bomben, M; Lanceri, L; Vitale, L; Lopez March, N; Martinez Vidal, F; Milanes, Da; Oyanguren, A; Albert, J; Banerjee, S; Choi, Hhf; Hamano, K; King, Gj; Kowalewski, R; Lewczuk, Mj; Nugent, Im; Roney, Jm; Sobie, Rj; Gershon, Tj; Harrison, Pf; Latham, Te; Puccio, Emt; Band, Hr; Dasu, S; Flood, Kt; Pan, Y; Prepost, R; Vuosalo, Co; Wu SLio, Emt; Band, Hr; Chen, X; Dasu, S; Flood, Kt; Pan, Y; Prepost, R; Vuosalo, Co; Wu SLi, M; Bomben, M; Bosisio, L; Cartaro, C; Della Ricca, G; Lanceri, L; Vitale, L; Azzolini, V; Lopez March, N; Martinez Vidal, F; Milanes, Da; Oyanguren, A; Albert, J; Banerjee, S; Bhuyan, B; Choi, Hhf; Hamano, K; King, Gj; Kowalewski, R; Lewczuk, Mj; Nugent, Im; Roney, Jm; Sobie, Rj; Gershon, Tj; Harrison, Pf; Ilic, J; Latham, Te; Mohanty, Gb; Puccio, Emt; Band, Hr; Chen, X; Dasu, S; Flood, Kt; Pan, Y; Prepost, R; Vuosalo, Co; Wu SLu, S; Flood, Kt; Pan, Y; Prepost, R; Vuosalo, Co; Wu, Slf; Cartaro, C; Convery, Mr; Dorfan, J; Dubois Felsmann, Gp; Dunwoodie, W; Field, Rc; Sevilla, Mf; Fulsom, Bg; Gabareen, Am; Graham, Mt; Grenier, P; Hast, C; Innes, Wr; Kelsey, Mh; Kim, H; Kim, P; Kocian, Ml; Leith, Dwgs; Li, S; Lindquist, B; Luitz, S; Luth, V; Lynch, Hl; Macfarlane, Db; Marsiske, H; Muller, Dr; Neal, H; Nelson, S; O'Grady, Cp; Ofte, I; Perl, M; Pulliam, T; Ratcliff, Bn; Roodman, A; Salnikov, Aa; Santoro, V; Schindler, Rh; Schwiening, J; Snyder, A; Su, D; Sullivan, Mk; Sun, S; Suzuki, K; Thompson, Jm; Va'Vra, J; Wagner, Ap; Weaver, M; West, Ca; Wisniewski, Wj; Wittgen, M; Wright, Dh; Wulsin, Hw; Yarritu, Ak; Young, Cc; Ziegler, V; Chen, Xr; Park, W; Purohit, Mv; White, Rm; Wilson, Jr; Sekula, Sj; Bellis, M; Burchat, Pr; Edwards, Aj; Miyashita, Ts; Ahmed, S; Alam, Ms; Ernst, Ja; Pan, B; Saeed, Ma; Zain, Sb; Guttman, N; Soffer, A; Lund, P; Spanier, Sm; Eckmann, R; Ritchie, Jl; Ruland, Am; Schilling, Cj; Schwitters, Rf; Wray, Bc; Izen, Jm; Lou, Xc; Bianchi, F; Gamba, D; Pelliccioni, M; Bomben, M; Lanceri, L; Vitale, L; Lopez March, N; Martinez Vidal, F; Milanes, Da; Oyanguren, A; Albert, J; Banerjee, S; Choi, Hhf; Hamano, K; King, Gj; Kowalewski, R; Lewczuk, Mj; Nugent, Im; Roney, Jm; Sobie, Rj; Gershon, Tj; Harrison, Pf; Latham, Te; Puccio, Emt; Band, Hr; Dasu, S; Flood, Kt; Pan, Y; Prepost, R; Vuosalo, Co; Wu SLele, G.; Steinbach, P.; Steinberg, P.; Stekl, I.; Stelzer, B.; Stelzer, H. J.; Stelzer Chilton, O.; Stenzel, H.; Stevenson, K.; Stewart, G. A.; Stillings, J. A.; Stockton, M. C.; Stoerig, K.; Stoicea, G.; Stonjek, S.; Strachota, P.; Stradling, A. R.; Straessner, A.; Strandberg, J.; Strandberg, S.; Strandlie, A.; Strang, M.; Strauss, E.; Strauss, M.; Strizenec, P.; Stroehmer, R.; Strom, D. M.; Strong, J. A.; Stroynowski, R.; Strube, J.; Stugu, B.; Stumer, I.; Stupak, J.; St,
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/11568/206039
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 51
  • ???jsp.display-item.citation.isi??? 31
social impact