We measure the time-dependent CP asymmetry in the radiative-penguin decay B0→KS0π-π+γ, using a sample of 471×106 (4S)→BB-events recorded with the BABAR detector at the PEP-II e+e- storage ring at SLAC. Using events with mKππ<1.8 GeV/c2, we measure the branching fractions of B+→K+π-π+γ and B0→K0π-π+γ, the branching fractions of the kaonic resonances decaying to K+π-π+, as well as the overall branching fractions of the B+→ρ0K+γ, B+→K∗0π+γ and S-wave B+→(Kπ)0∗0π+γ components. For events from the ρ mass band, we measure the CP-violating parameters SKS0π+π-γ=0.14±0.25±0.03 and CKS0π+π-γ=-0.39±0.20-0.02+0.03, where the first uncertainties are statistical and the second are systematic. We extract from this measurement the time-dependent CP asymmetry related to the CP eigenstate ρ0KS0 and obtain SKS0ργ=-0.18±0.32-0.05+0.06, which provides information on the photon polarization in the underlying b→sγ transition.

Del Amo Sanchez, P., Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., et al. (2016). Time-dependent analysis of B0 → KS0 π-π+γ decays and studies of the K+π-π+ system in B+ →k+π-π+γ decays. PHYSICAL REVIEW D, 93(5) [10.1103/PhysRevD.93.052013].

Time-dependent analysis of B0 → KS0 π-π+γ decays and studies of the K+π-π+ system in B+ →k+π-π+γ decays

CARPINELLI, Massimo
Membro del Collaboration Group
;
2016

Abstract

We measure the time-dependent CP asymmetry in the radiative-penguin decay B0→KS0π-π+γ, using a sample of 471×106 (4S)→BB-events recorded with the BABAR detector at the PEP-II e+e- storage ring at SLAC. Using events with mKππ<1.8 GeV/c2, we measure the branching fractions of B+→K+π-π+γ and B0→K0π-π+γ, the branching fractions of the kaonic resonances decaying to K+π-π+, as well as the overall branching fractions of the B+→ρ0K+γ, B+→K∗0π+γ and S-wave B+→(Kπ)0∗0π+γ components. For events from the ρ mass band, we measure the CP-violating parameters SKS0π+π-γ=0.14±0.25±0.03 and CKS0π+π-γ=-0.39±0.20-0.02+0.03, where the first uncertainties are statistical and the second are systematic. We extract from this measurement the time-dependent CP asymmetry related to the CP eigenstate ρ0KS0 and obtain SKS0ργ=-0.18±0.32-0.05+0.06, which provides information on the photon polarization in the underlying b→sγ transition.
Articolo in rivista - Articolo scientifico
Scientifica
Nuclear and High Energy Physics
English
Carpinelli Massimo (BABAR Collaboration)
Del Amo Sanchez, P., Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., et al. (2016). Time-dependent analysis of B0 → KS0 π-π+γ decays and studies of the K+π-π+ system in B+ →k+π-π+γ decays. PHYSICAL REVIEW D, 93(5) [10.1103/PhysRevD.93.052013].
Del Amo Sanchez, P; 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; 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; Kim, J; Miyashita, T; Ongmongkolkul, P; Porter, F; Röhrken, M; Andreassen, R; Huard, Z; Meadows, B; Pushpawela, B; Sokoloff, M; Sun, L; Ford, W; 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; Santoro, V; Calcaterra, A; De Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, I; Piccolo, 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; Dey, B; 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; Rama, M; 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; Luitz, S; Luth, V; Macfarlane, D; Muller, D; Neal, H; 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; 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/10281/389153
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