First Observation of Doubly Charmed Baryons
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| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2003 |
| ISBN-10 | : OCLC:68491201 |
| ISBN-13 | : |
| Rating | : 4/5 (01 Downloads) |
Book Synopsis First Observation of Doubly Charmed Baryons by :
Book excerpt: The SELEX experiment (E781) at Fermilab has observed two statistically compelling high mass states near 3.6 GeV/c[sup 2], decaying to[Lambda][sub c][sup+] K[sup -][pi][sup+] and[Lambda][sub c][sup+] K[sup -][pi][sup+][pi][sup+]. These final states are Cabibbo-allowed decay modes of doubly charmed baryons[Xi][sub cc][sup+] and[Xi][sub cc][sup++], 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/c[sup 2], a high mass state decaying to[Lambda][sub c][sup+] K[sup -][pi][sup+][pi][sup+], possibly an excited[Xi][sub cc][sup++] (ccu*). Data are presented and discussed.
