Observation of B(0) --> D0pi(0) and B(0) -->D(0)pi(0)

• Published in: Physical review letters 2002-02, Vol.88 (6), p.062001-062001
• Main Authors: Coan, T E, Gao, Y S, Liu, F, Maravin, Y, Narsky, I, Stroynowski, R, Ye, J, Artuso, M, Boulahouache, C, Bukin, K, Dambasuren, E, Mountain, R, Skwarnicki, T, Stone, S, Wang, J C, Mahmood, A H, Csorna, S E, Danko, I, Xu, Z, Bonvicini, G, Cinabro, D, Dubrovin, M, McGee, S, Bornheim, A, Lipeles, E, Pappas, S P, Shapiro, A, Sun, W M, Weinstein, A J, Masek, G, Paar, H P, Mahapatra, R, Morrison, R J, Nelson, H N, Briere, R A, Chen, G P, Ferguson, T, Tatishvili, G, Vogel, H, Adam, N E, Alexander, J P, Bebek, C, Berkelman, K, Blanc, F, Boisvert, V, Cassel, D G, Drell, P S, Duboscq, J E, Ecklund, K M, Ehrlich, R, Gibbons, L, Gittelman, B, Gray, S W, Hartill, D L, Heltsley, B K, Hsu, L, Jones, C D, Kandaswamy, J, Kreinick, D L, Magerkurth, A, Mahlke-Krüger, H, Meyer, T O, Mistry, N B, Nordberg, E, Palmer, M, Patterson, J R, Peterson, D, Pivarski, J, Riley, D, Sadoff, A J, Schwarthoff, H, Shepherd, M R, Thayer, J G, Urner, D, Valant-Spaight, B, Viehhauser, G, Warburton, A, Weinberger, M, Athar, S B, Avery, P, Prescott, C, Stoeck, H, Yelton, J, Brandenburg, G, Ershov, A, Kim, D Y-J, Wilson, R, Benslama, K, Eisenstein, B I, Ernst, J, Gollin, G D, Hans, R M, Karliner, I, Lowrey, N, Marsh, M A, Plager, C, Sedlack, C, Selen, M, Thaler, J J, Williams, J
• Format: Article
• Language: English
• ISSN: 0031-9007

We have studied the color-suppressed hadronic decays of neutral B mesons into the final states D*0pi(0). Using 9.67 x 10(6) BB pairs collected with the CLEO detector, we observe the decays B( 0) --> D0pi(0) and B( 0) -->D(*0)pi(0) with the branching fractions BB( 0) -->D0pi(0)) = (2.74(+0.36)(-0.32) +/- 0.55)x10(-4) and BB( 0) -->D(*0)pi(0)) = (2.20(+0.59)(-0.52) +/- 0.79)x10(-4). The first error is statistical and the second systematic. The statistical significance of the D0pi(0) signal is 12.1sigma ( 5.9sigma for D(*0)pi(0)). Utilizing the B( 0) -->D*0)pi(0) branching fractions we determine the strong phases delta(I,D(*)) between isospin 1/2 and 3/2 amplitudes in the Dpi and D*pi final states to be cosdelta(I,D) = 0.89 +/-0.08 and cosdelta(I,D*) = 0.89 +/- 0.08, respectively.