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New measurements of Cabibbo-suppressed decays of mesons with the CLEO-c detector |
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| 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 |
| Affiliation: | George Mason University, Fairfax, Virginia 22030, USA. |
| Abstract: | 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. |
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