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AbstractAbstract
[en] The SELEX experiment (E781) at Fermilab has observed two statistically compelling high mass states near 3.6 GeV/c2, decaying to Λc+ K- π+ and Λc+ K- π+π+. These final states are Cabibbo-allowed decay modes of doubly charmed baryons Ξcc+ and Ξcc++, respectively. The masses are in the range expected from theoretical considerations, but the spectroscopy is surprising. SELEX also has weaker preliminary evidence for a state near 3.8 GeV/c2, a high mass state decaying to Λc+ K- π+π+, possibly an excited Ξcc++ (ccu*). Data are presented and discussed
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25 Sep 2003; 12 p; Advanced Study Institute on Symmetries and Spin (Praha 2002); Prague (Czech Republic); 14-27 Jul 2002; AC02-76CH03000; Available from PURL: https://www.osti.gov/servlets/purl/815205-U92mEr/native/
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