New measurements of Cabibbo-suppressed decays of mesons with the CLEO-c detector

Using of data collected with the CLEO-c detector, we report on first observations and measurements of Cabibbo-suppressed decays of D mesons in the following six decay modes: pi+ pi- pi0 pi0, pi+ pi+ pi- pi- pi0, pi+ pi0 pi0, pi+ pi+ pi- pi0, eta pi0, and omega pi+ pi-. Improved branching fraction me...

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Published in:Physical review letters 2006-03, Vol.96 (8), p.081802-081802
Main Authors: Rubin, P, Cawlfield, C, Eisenstein, B I, Karliner, I, Kim, D, Lowrey, N, Naik, P, Sedlack, C, Selen, M, White, E J, Wiss, J, Shepherd, M R, Besson, D, Pedlar, T K, Cronin-Hennessy, D, Gao, K Y, Gong, D T, Hietala, J, Kubota, Y, Klein, T, Lang, B W, Poling, R, Scott, A W, Smith, A, Dobbs, S, Metreveli, Z, Seth, K K, Tomaradze, A, Zweber, P, Ernst, J, Severini, H, Dytman, S A, Love, W, Mehrabyan, S, Savinov, V, Aquines, O, Li, Z, Lopez, A, Mendez, H, Ramirez, J, Xin, B, Huang, G S, Miller, D H, Pavlunin, V, Sanghi, B, Shipsey, I P J, Adams, G S, Anderson, M, Cummings, J P, Danko, I, Napolitano, J, He, Q, Insler, J, Muramatsu, H, Park, C S, Thorndike, E H, Coan, T E, Gao, Y S, Liu, F, Stroynowski, R, Artuso, M, Blusk, S, Butt, J, Li, J, Menaa, N, Mountain, R, Nisar, S, Randrianarivony, K, Redjimi, R, Sia, R, Skwarnicki, T, Stone, S, Wang, J C, Zhang, K, Csorna, S E, Bonvicini, G, Cinabro, D, Dubrovin, M, Lincoln, A, Asner, D M, Edwards, K W, Briere, R A, Brock, I, Chen, J, Ferguson, T, Tatishvili, G, Vogel, H, Watkins, M E, Rosner, J L, Adam, N E, Alexander, J P, Berkelman, K, Cassel, D G, Duboscq, J E, Ecklund, K M, Ehrlich, R, Fields, L, Gibbons, L, Gray, R, Gray, S W
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Language:English
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Summary:Using of data collected with the CLEO-c detector, we report on first observations and measurements of Cabibbo-suppressed decays of D mesons in the following six decay modes: pi+ pi- pi0 pi0, pi+ pi+ pi- pi- pi0, pi+ pi0 pi0, pi+ pi+ pi- pi0, eta pi0, and omega pi+ pi-. Improved branching fraction measurements in eight other multipion decay modes are also presented. The measured D --> pi pi rates allow us to extract the ratio of isospin amplitudes A(DeltaI = (3/2) / A(DeltaI = (1/2)) = 0.420 +/- 0.014(stat) +/- 0.016(syst) and the strong phase shift of delta1 = (86.4 +/- 2.8 +/- 3.3) degrees, which is quite large and now more precisely determined.
ISSN:0031-9007