Charm Production by 350 GeV/c - Interactions in Nuclear Emulsion

S. Aoki, R. Arnold, G. Baroni,V. Bisi, A. C. Breslin,M. G. Catanesi,K. Chiba, D. H. Davis,M. De Vincenzi,S. Di Liberto, M. J. Esten, K. Hoshino, M. Kazuno, M. Kobayashi,K. Kodama,Y. Maeda, G. Martellotti, A. Marzari-Chiesa,M. A. Mazzoni,F. Meddi, F. Minakawa, M. Miyanishi, M. T. Muciaccia, M. Nakamura,K. Nakazawa,S. Natali,K. Niu, K. Niwa,G. Penso, G. Poulard,E. Radicioni, L. Ramello,G. Romano,G. Rosa, M. S. Sartori,H. Sasaki, Y. Sato,C. Sgarbi,H. Shibuya,S. Simone, H. I. Sletten,H. Tajima,S. Tasaka,I. Tezuka, D. N. Tovee,N. Ushida,Y. Yanagisawa

Progress of Theoretical Physics（1992）

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Abstract

Results are presented on the production cross-section of charmed particles obtained from the WA75 emulsion hybrid experiment. The events, selected by the presence of a muon with a high momentum transverse to the beam direction, were located and analysed in nuclear emulsions. A Monte Carlo simulation allowed the computation of acceptances due to both apparatus and selection, as well as scanning and finding efficiencies. The ccBAR hadroproduction cross-section has been determined over the entire X(F) region as sigma(ccBAR)=23.1+/-1.3(stat)+4.0/-3.3(syst) mu-b per nucleon assuming an A0.87 dependence.

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Key words

cross section,particle physics,monte carlo simulation

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