First Observation of the DecayDs+→pn¯

S B Athar,A Lincoln,D L Kreinick,T K Pedlar,D Cronin-Hennessy,N Lowrey,R Poling,D G Cassel,B W Lang,T Wilksen,R Mountain,H Muramatsu,J Hietala,B K Heltsley,M Dubrovin,B Xin,D L Hartill,A J Sadoff,E H Thorndike,D Cinabro,V Savinov,R E Mitchell,P Naik,R Gray,Q He,D Riley,S Stroiney,H Mahlke-Krüger,C S Park,G Bonvicini,P Rubin,S Blusk,D Hertz,L Fields,J Insler,A Powell,R A Briere,K Randrianarivony,K Y Gao,J E Duboscq,M R Shepherd,D M Asner,B Moziak,K W Edwards,D Mohapatra,S Nisar,E J White,G S Adams,J Kandaswamy,M E Watkins,G Wilkinson,T Klein,S W Gray,G Tatishvili,Z Metreveli,D Peterson,R Ehrlich,S Mehrabyan,B I Eisenstein,J Napolitano,J Libby,I Karliner,T Ferguson,I P J Shipsey,J Li,A Rýd ,M Selen,D Besson,S Stone,P Zweber,X Shi,J E Ramirez Vargas ,M Artuso,Y Kubota,D H Miller,A Tomaradze,T Skwarnicki,N Sultana,K K Seth,H Vogel,F Yang,L Gibbons,J Alexander ,Jun Ge ,A López ,P U E Onyisi,J P Cummings,J H Rademacker ,A W Scott,M Anderson,K M Ecklund,R Patel,W Sun ,Dandan Hu ,J Reed,I Dankó ,Jonathan L Rosner ,S Dobbs,H Méndez ,James Ledoux ,J Wiss,L M Zhang,J C Wang,J M Hunt,В Е Кузнецов ,J Yelton,J R Patterson,W A Love ,S Khalil

doi:10.1103/physrevlett.100.181802

First Observation of the DecayDs+→pn¯

S B Athar, A Lincoln + Show 107 more

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https://doi.org/10.1103/physrevlett.100.181802

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#Decay Ds #Ds Production + Show 2 more

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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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