Observation of Two Narrow States Decaying intoΞc+γandΞc0γ

C P Jessop,D H Miller,P I Hopman,K M Ecklund,B Valant-Spaight,H Kagan,A L Lyon,B E Berger,L Zhou,K Berkelman,E Johnson,E I Shibata,N Menon,A Warburton,M Bishai,P S Drell,L Gibbons,H Schwarthoff,R A Briere,R Mountain,H Yamamoto,S W Gray,A J Weinstein,Z Ling,J Kandaswamy,D L Hartill,J Lorenc,J W Hinson,H Marsiske,S Schrenk,S Chan,G Masek,A H Mahmood,E Lipeles,M S Alam,J Roy,P Avery,D Riley,P Skubic,R Davis,J L Rodriguez,S Roberts,A J Sadoff,D L Kreinick,R Poling,S Schuh,C Gwon,M Dickson,E H Thorndike,H N Nelson,A Bean,T Hart,V Savinov,S Glenn,D G Cassel,S E Csorna,B H Behrens,C D Jones,S Anderson,A Bellerive,N B Mistry,T E Browder,R M Hans,S B Athar,K Lingel,B I Eisenstein,D M Asner,D Cinabro,K Honscheid,D Peterson,D Besson,T E Coan,D S Crowcroft,R Stroynowski,A Soffer,D Coppage,L P Perera,C R Ng,T Riehle,A Wolf,R Mahapatra,J Gronberg,C Prescott,Y Kubota,V Boisvert,B K Heltsley,Y Maravin,J J Thaler,P Pomianowski,M Athanas,H Krieg,I Narsky,J E Duboscq,E Nordberg,R Janicek,S Von Dombrowski,E Dambasuren,D J Lange,J Yelton,K W Edwards,K Kinoshita,B Gittelman,P Gaidarev,S Timm,R Ehrlich,J G Smith,A Eppich,K K Gan,R Godang,R Ammar,A Undrus,J Ernst,J S Miller,J C Wang,A Ershov,S Stone,I Kravchenko,G D Gollin,N Kwak,A Titov,H Severini,S Prell,M M Zoeller,M A Marsh,K W Mclean,S Kotov,D Ugolini,Z Xu,R Greene,J Lee,M Palmer,T Lee,Y Liu,G Bonvicini,D E Jaffe,R J Morrison,D Y.-J Kim,J P Alexander,T K Nelson,S J Richichi,G Eigen,E M Potter,A Shapiro,J R Patterson,M Artuso,T Skwarnicki,G J Zhou,G C Moneti,W T Ford,S J Lee,C Bebek,T Bergfeld,M Ogg,H P Paar,A I Rubiera,G E Gladding,P M Patel,M Lohner,R Kass,Y S Gao,S Chen,G Brandenburg,F Würthwein,A Anastassov,V Sharma,J Ye,I Karliner,J Urheim,I C Lai,T S Hill,M Selen,Y Li,P Baringer,I P J Shipsey,I Korolkov,V Fadeyev,S Márka ,Y J Kwon ,A J S Smith ,C P Ward ,Richard Wilson ,J P Zheng ,W Sun ,R C Baker ,D A Roberts ,A V Gritsan ,M Śchmidtler ,S Köpp ,F R Wappler ,М Перл ,G H A Viehhauser ,A Foland ,T Włodek ,J E Fast ,J J O’neill ,Xiang Zhou

doi:10.1103/physrevlett.82.492

Observation of Two Narrow States Decaying intoΞc+γandΞc0γ

C P Jessop, D H Miller + Show 194 more

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https://doi.org/10.1103/physrevlett.82.492

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Journal: Physical Review Letters	Publication Date: Jan 18, 1999
Citations: 45

Affiliation: Stanford Synchrotron Radiation Lightsource, Stanford University, SLAC National Accelerator Laboratory, Purdue University West Lafayette, Cornell University, The Ohio State University, University of Rochester, University of Kansas, University of Illinois Urbana-Champaign, Harvard University Press, Syracuse University, University of Hawaiʻi at Mānoa, California Institute of Technology, University at Albany, State University of New York, Virginia Tech, University of California, San Diego, University of Colorado Boulder, University of Florida, University of Oklahoma, Ithaca College, University of Minnesota, University of California, Santa Barbara, Vanderbilt University, McGill University, Institute of Particle Physics, Wayne State University, Southern Methodist University, Carleton University

#Mass Differences #Charmed Strange Baryons + Show 3 more

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Abstract

We report the first observation of two narrow charmed strange baryons decaying to $\Xi_c^+\gamma$ and $\Xi_c^0\gamma$, respectively, using data from the CLEO II detector at CESR. We interpret the observed signals as the $\Xi_c^{+\prime}(c{su})$ and $\Xi_c^{0\prime}(c{sd})$, the symmetric partners of the well-established antisymmetric $\Xi_c^+(c[su])$ and $\Xi_c^0(c[sd])$. The mass differences $M(\Xi_c^{+\prime})-M(\Xi_c^+)$ and $M(\Xi_c^{0\prime})-M(\Xi_c^0)$ are measured to be $107.8\pm 1.7\pm 2.5$ and $107.0\pm 1.4\pm 2.5 MeV/c^2$, respectively.

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