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First observation of the decay Ds+-->pn |
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| Authors: | Athar S B Patel R Yelton J Rubin P Eisenstein B I Karliner I Mehrabyan S Lowrey N Selen M White E J Wiss J Mitchell R E Shepherd M R Besson D Pedlar T K Cronin-Hennessy D Gao K Y Hietala J Kubota Y Klein T Lang B W Poling R Scott A W Zweber P Dobbs S Metreveli Z Seth K K Tomaradze A Libby J Powell A Wilkinson G Ecklund K M Love W Savinov V Lopez A Mendez H Ramirez J Ge J Y Miller D H Shipsey I P J Xin B Adams G S Anderson M Cummings J P Danko I Hu D Moziak B Napolitano J He Q Insler J Muramatsu H Park C S Thorndike E H Yang F Artuso M Blusk S Khalil S Li J Mountain R Nisar S Randrianarivony K |
| Institution: | University of Florida, Gainesville, Florida 32611, USA. |
| Abstract: | Using e+e--->Ds*-Ds+ data collected near the peak Ds production energy, Ecm=4170 MeV, with the CLEO-c detector, we present the first observation of the decay Ds+-->pn. We measure a branching fraction B(Ds+-->pn)=(1.30+/-0.36(-0.16)+0.12)x10(-3). This is the first observation of a charmed meson decaying into a baryon-antibaryon final state. |
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