Diffractive production of the charmed baryon Λ+c at the CERN ISR |
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| Authors: | K.L. Giboni,D. Dibitonto,M. Barone,M.M. Block,A. B?hm,R. Campanini,F. Ceradini,J. Eickmeyer,D. Hanna,J. Irion,A. Kernan,H. Ludwig,F. Muller,B. Naroska,F. Navach,M. Nussbaum,J. O&#x Connor,C. Rubbia,R. Wojslaw |
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| Affiliation: | 1. III. Physikalisches Institut der Technischen Hochschule, Aachen, Germany;2. CERN, Geneva, Switzerland;3. Lyman Laboratory, Department of Physics, Harvard University, Cambridge, MA, USA;4. Sektion Physik der Universität, Munich, Germany;5. Northwestern University, Evanston, IL, USA;6. University of California, Riverside, CA, USA |
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| Abstract: | In a sample of diffractive events of high multiplicity a sharp five standard deviation signal is observed at M = 2255 MeV/c2 in the K?pπ+ mass distribution and, although with less statistical strength, at the same mass in the Λ0π+π+π? channel. These signals are identified as being due to the decay of the charmed baryon Λ+c which is produced with a cross section times branching ratio σcB in the range 0.7?1.8 μb for the K?π+p decay and 0.3?0.7 μb for the Λ-π+π+ π? system. |
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