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Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N et al (show 397 more authors) , Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bracko, M, Browder, TE, Brown, DN, Buenger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP 
ORCID: 0000-0003-1319-0889, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Dolezal, Z, Dorfan, J, Drasal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, Ernst, JA, Faccini, R, Fast, JE, Feindt, M, Ferrarotto, F, Ferroni, F, Field, RC, Filippi, A, Finocchiaro, G, Fioravanti, E, Flood, KT, Forti, F, Fritsch, M, Fulsom, BG, Gabathuler, E, Gamba, D, Garg, R, Garmash, A, Gary, JW, Garzia, I, Gaur, V, Gaz, A, Gelb, M, Gershon, TJ, Gioi, L Li, Giorgi, MA, Giri, A, Godang, R, Goldenzweig, P, Golob, B, Golubev, VB, Gorodeisky, R, Gradl, W, Graham, MT, Grauges, E, Griessinger, K, Gritsan, AV, Gruenberg, O, Guido, E, Guttman, N, Hafner, A, Hara, T, Harrison, PF, Hast, C, Hayasaka, K, Hearty, C, Heck, M, Hedges, MT, Hess, M, Hirose, S, Hitlin, DG, Honscheid, K, Hou, W-S, Huard, Z, Van Hulse, C, Hutchcroft, DE ORCID: 0000-0002-4174-6509, Inami, K, Inguglia, G, Innes, WR, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Izen, JM, Jacobs, WW, Jawahery, A, Jessop, CP, Jia, S, Jin, Y, Joo, KK, Julius, T, Kaliyar, AB, Kang, KH, Karyan, G, Kass, R, Kichimi, H, Kim, DY, Kim, JB, Kim, KT, Kim, SH, Kim, J, Kim, P, King, GJ, Kinoshita, K, Koch, H, Kodys, P, Kolomensky, Yu G, Korpar, S, Kotchetkov, D, Kowalewski, R, Kravchenko, EA, Krizan, P, Kroeger, R, Krokovny, P, Kuhr, T, Kulasiri, R, Kuzmin, A, Kwon, Y-J, Lacker, HM, Lafferty, GD, Lanceri, L, Lange, JS, Lange, DJ, Lankford, AJ, Latham, TE, Leddig, T, Le Diberder, F, Lee, IS, Lee, SC, Lees, JP, Leith, DWGS, Li, LK, Li, YB, Li, Y, Libby, J, Liventsev, D, Lockman, WS, Long, O, LoSecco, JM, Lou, XC, Lubej, M, Lueck, T, Luitz, S, Luo, T, Luppi, E, Lusiani, A, Lutz, AM, MacFarlane, DB, MacNaughton, J, Mallik, U, Manoni, E, Marchiori, G, Margoni, M, Martellotti, S, Martinez-Vidal, F, Masuda, M, Matsuda, T, Mattison, TS, Matvienko, D, McKenna, JA, Meadows, BT, Merola, M, Miyabayashi, K, Miyashita, TS, Miyata, H, Mizuk, R, Mohanty, GB, Mori, T, Muller, DR, Mueller, T, Mussa, R, Nakano, E, Nakao, M, Nanut, T, Nath, KJ, Nayak, M, Neal, H, Neri, N, Nisar, NK, Nishida, S, Nugent, IM, Oberhof, B, Ocariz, J, Ogawa, S, Ongmongkolkul, P, Ono, H, Onuchin, AP, Oyanguren, A, Pakhlov, P, Pakhlova, G, Pal, B, Palano, A, Palombo, F, Vazquez, W Panduro, Paoloni, E, Pardi, S, Park, H, Passaggio, S, Patrignani, C, Patteri, P, Paul, S, Pavelkin, I, Payne, DJ, Pedlar, TK, Peimer, DR, Peruzzi, IM, Piccolo, M, Piilonen, LE, Pilloni, A, Piredda, G, Poireau, V, Porter, FC, Posocco, M, Prell, S, Prepost, R, Puccio, EMT, Purohit, MV, Pushpawela, BG, Rama, M, Randle-Conde, A, Ratcliff, BN, Raven, G, Resmi, PK, Ritchie, JL, Ritter, M, Rizzo, G, Roberts, DA, Robertson, SH, Roehrken, M, Roney, JM, Roodman, A, Rossi, A, Rotondo, M, Rozanska, M, Russo, G, Sacco, R, Al Said, S, Sakai, Y, Sandilya, S, Santelj, L, Santoro, V, Sanuki, T, Savinov, V, Schneider, O, Schnell, G, Schroeder, T, Schubert, KR, Schwanda, C, Schwartz, AJ, Schwitters, RF, Sciacca, C, Seddon, RM, Seino, Y, Sekula, SJ, Senyo, K, Seon, O, Serednyakov, SI, Sevior, ME, Shebalin, V, Shibata, T-A, Shimizu, N, Shiu, J-G, Simi, G, Simon, F, Simonetto, F, Skovpen, Yu I, Smith, JG, Smith, AJS, So, RY, Sobie, RJ, Soffer, A, Sokoloff, MD, Solodov, EP, Solovieva, E, Spanier, SM, Staric, M, Stroili, R, Sullivan, MK, Sumisawa, K, Sumiyoshi, T, Summers, DJ, Sun, L, Takizawa, M, Tamponi, U, Tanida, K, Taras, P, Tasneem, N, Tenchini, F, Tisserand, V, Todyshevx, K Yu, Touramanis, C ORCID: 0000-0001-5191-2171, Uchida, M, Uglov, T, Unno, Y, Uno, S, Vahsen, SE, Varner, G, Vasseur, G, Va'vra, J, Cervenkov, D, Verderi, M, Vitale, L, Vorobyev, V, Voss, C, Wagner, SR, Waheed, E, Waldi, R, Walsh, JJ, Wang, B, Wang, CH, Wang, M-Z, Wang, P, Wilson, FF, Wilson, JR, Wisniewski, WJ, Won, E, Wormser, G, Wright, DM, Wu, SL, Yuan, CZ, Yusa, Y, Zakharov, S, Zallo, A, Zani, L, Zhang, ZP, Zhilich, V, Zhukova, V, Zhulanov, V and Zupanc, A
(2018)
Measurement of cos 2β in <i>B</i><SUP>0</SUP> → <i>D</i><SUP>(*)</SUP><i>h</i><SUP>0</SUP> with <i>D →</i> <i>K</i><SUP>0</SUP><i><sub>S</sub></i>π<SUP>+</SUP> π<SUP>-</SUP> decays by a combined time-dependent Dalitz plot analysis of <i>BABAR</i> and Belle data.
PHYSICAL REVIEW D, 98 (11).
112012-.
Abstract
We report measurements of $\sin{2\beta}$ and $\cos{2\beta}$ from a
time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to
K_{S}^{0} \pi^{+} \pi^{-}$ decays, where the light unflavored and neutral
hadron $h^{0}$ is a $\pi^{0}$, $\eta$, or $\omega$ meson. The analysis is
performed with a combination of the final data sets of the \babar\ and Belle
experiments containing $471 \times 10^{6}$ and $772 \times 10^{6}$ $B\bar{B}$
pairs collected at the $\Upsilon\left(4S\right)$ resonance at the
asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We
measure $\sin{2\beta} = 0.80 \pm 0.14 \,(\rm{stat.}) \pm 0.06 \,(\rm{syst.})
\pm 0.03 \,(\rm{model})$ and $\cos{2\beta} = 0.91 \pm 0.22 \,(\rm{stat.}) \pm
0.09 \,(\rm{syst.}) \pm 0.07 \,(\rm{model})$. The result for the direct
measurement of the angle is $\beta = \left( 22.5 \pm 4.4 \,(\rm{stat.}) \pm 1.2
\,(\rm{syst.}) \pm 0.6 \,(\rm{model}) \right)^{\circ}$. The last quoted
uncertainties are due to the composition of the $D^{0} \to K_{S}^{0} \pi^{+}
\pi^{-}$ decay amplitude model, which is newly established by a Dalitz plot
amplitude analysis of a high-statistics $e^{+}e^{-} \to c\bar{c}$ data sample
as part of this analysis. We find the first evidence for $\cos2\beta>0$ at the
level of $3.7$ standard deviations. The measurement excludes the trigonometric
multifold solution $\pi/2 - \beta = (68.1 \pm 0.7)^{\circ}$ at the level of
$7.3$ standard deviations and therefore resolves an ambiguity in the
determination of the apex of the CKM Unitarity Triangle. The hypothesis of
$\beta = 0^{\circ}$ is ruled out at the level of $5.1$ standard deviations, and
thus CP violation is observed in $B^{0} \to D^{(*)} h^{0}$ decays.
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