We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state KS0π+π0 using the full BABAR data set of 470.9±2.8 million BB events collected at the ϒ(4S) resonance. We measure the overall branching fraction and CP asymmetry to be B(B+→K0π+π0)=(31.8±1.8±2.1-0.0+6.0)×10-6 and ACP(B+→K0π+π0)=0.07±0.05±0.03-0.03+0.02, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B+→K0π+π0. We find first evidence of a CP asymmetry in B+→K∗(892)+π0 decays: ACP(B+→K∗(892)+π0)=-0.52±0.14±0.04-0.02+0.04. The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.

Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2017). Evidence for CP violation in B+ →k∗ (892)+π0 from a Dalitz plot analysis of B+ → KS0 π+π0 decays. PHYSICAL REVIEW D, 96(7) [10.1103/PhysRevD.96.072001].

Evidence for CP violation in B+ →k∗ (892)+π0 from a Dalitz plot analysis of B+ → KS0 π+π0 decays

Carpinelli, M.
Membro del Collaboration Group
;
2017

Abstract

We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state KS0π+π0 using the full BABAR data set of 470.9±2.8 million BB events collected at the ϒ(4S) resonance. We measure the overall branching fraction and CP asymmetry to be B(B+→K0π+π0)=(31.8±1.8±2.1-0.0+6.0)×10-6 and ACP(B+→K0π+π0)=0.07±0.05±0.03-0.03+0.02, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B+→K0π+π0. We find first evidence of a CP asymmetry in B+→K∗(892)+π0 decays: ACP(B+→K∗(892)+π0)=-0.52±0.14±0.04-0.02+0.04. The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.
Articolo in rivista - Articolo scientifico
Scientifica
Physics and Astronomy (miscellaneous)
English
Carpinelli Massimo (The BaBar Collaboration)
Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2017). Evidence for CP violation in B+ →k∗ (892)+π0 from a Dalitz plot analysis of B+ → KS0 π+π0 decays. PHYSICAL REVIEW D, 96(7) [10.1103/PhysRevD.96.072001].
Lees, J; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, D; Kerth, L; Kolomensky, Y; Lee, M; Lynch, G; Koch, H; Schroeder, T; Hearty, C; Mattison, T; Mckenna, J; So, R; Khan, A; Blinov, V; Buzykaev, A; Druzhinin, V; Golubev, V; Kravchenko, E; Onuchin, A; Serednyakov, S; Skovpen, Y; Solodov, E; Todyshev, K; Lankford, A; Dey, B; Gary, J; Long, O; Franco Sevilla, M; Hong, T; Kovalskyi, D; Richman, J; West, C; Eisner, A; Lockman, W; Panduro Vazquez, W; Schumm, B; Seiden, A; Chao, D; Cheng, C; Echenard, B; Flood, K; Hitlin, D; Miyashita, T; Ongmongkolkul, P; Porter, F; Röhrken, M; Andreassen, R; Huard, Z; Meadows, B; Pushpawela, B; Sokoloff, M; Sun, L; Bloom, P; Ford, W; Gaz, A; Smith, J; Wagner, S; Ayad, R; Toki, W; Spaan, B; Bernard, D; Verderi, M; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Calcaterra, A; De Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, I; Piccolo, M; Rama, M; Zallo, A; Contri, R; Monge, M; Passaggio, S; Patrignani, C; Bhuyan, B; Prasad, V; Adametz, A; Uwer, U; Lacker, H; Mallik, U; Chen, C; Cochran, J; Prell, S; Ahmed, H; Gritsan, A; Arnaud, N; Davier, M; Derkach, D; Grosdidier, G; Le Diberder, F; Lutz, A; Malaescu, B; Roudeau, P; Stocchi, A; Wormser, G; Lange, D; Wright, D; Coleman, J; Fry, J; Gabathuler, E; Hutchcroft, D; Payne, D; Touramanis, C; Bevan, A; Di Lodovico, F; Sacco, R; Cowan, G; Brown, D; Davis, C; Denig, A; Fritsch, M; Gradl, W; Griessinger, K; Hafner, A; Schubert, K; Barlow, R; Lafferty, G; Cenci, R; Hamilton, B; Jawahery, A; Roberts, D; Cowan, R; Cheaib, R; Patel, P; Robertson, S; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Summers, D; Simard, M; Taras, P; De Nardo, G; Onorato, G; Sciacca, C; Raven, G; Jessop, C; Losecco, J; Honscheid, K; Kass, R; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben-Haim, E; Bomben, M; Bonneaud, G; Briand, H; Calderini, G; Chauveau, J; Leruste, P; Marchiori, G; Ocariz, J; Biasini, M; Manoni, E; Rossi, A; Angelini, C; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Chrzaszcz, M; Forti, F; Giorgi, M; Lusiani, A; Oberhof, B; Paoloni, E; Rizzo, G; Walsh, J; Lopes Pegna, D; Olsen, J; Smith, A; Anulli, F; Faccini, R; Ferrarotto, F; Ferroni, F; Gaspero, M; Pilloni, A; Piredda, G; Bünger, C; Dittrich, S; Grünberg, O; Hess, M; Leddig, T; Voß, C; Waldi, R; Adye, T; Olaiya, E; Wilson, F; Emery, S; Vasseur, G; Aston, D; Bard, D; Cartaro, C; Convery, M; Dorfan, J; Dubois-Felsmann, G; Dunwoodie, W; Ebert, M; Field, R; Fulsom, B; Graham, M; Hast, C; Innes, W; Kim, P; Leith, D; Lindemann, D; Luitz, S; Luth, V; Lynch, H; Macfarlane, D; Muller, D; Neal, H; Perl, M; Pulliam, T; Ratcliff, B; Roodman, A; Schindler, R; Snyder, A; Su, D; Sullivan, M; Va'Vra, J; Wisniewski, W; Wulsin, H; Purohit, M; Wilson, J; Randle-Conde, A; Sekula, S; Bellis, M; Burchat, P; Puccio, E; Alam, M; Ernst, J; Gorodeisky, R; Guttman, N; Peimer, D; Soffer, A; Spanier, S; Ritchie, J; Schwitters, R; Izen, J; Lou, X; Bianchi, F; De Mori, F; Filippi, A; Gamba, D; Lanceri, L; Vitale, L; Martinez-Vidal, F; Oyanguren, A; Villanueva-Perez, P; Albert, J; Banerjee, S; Beaulieu, A; Bernlochner, F; Choi, H; King, G; Kowalewski, R; Lewczuk, M; Lueck, T; Nugent, I; Roney, J; Sobie, R; Tasneem, N; Gershon, T; Harrison, P; Latham, T; Band, H; Dasu, S; Pan, Y; Prepost, R; Wu, S
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/389140
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