Charged charm production in proton-emulsion interactions at 400 GeV/c

Aziz, T. ; Ahmad, S. ; Ahrar, H. ; Beri, S. B. ; Bhatia, V. S. ; Ganguli, S. N. ; Gupta, S. K. ; Gupta, V. K. ; Gurtu, A. ; Kaul, G. L. ; Malhotra, P. K. (1985) Charged charm production in proton-emulsion interactions at 400 GeV/c Zeitschrift für Physik C Particles and Fields, 27 (3). pp. 325-328. ISSN 0170-9739

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A study of charged charm production is made at 400 GeV incident energy of protons in nuclear emulsion. A total of 7005 primary stars have been scrutinized to look for charm particle decays in the forward cone within a decay distance of 100-1,000 µm (3,056 stars) and 100-2,000 µm (3,949 stars). In all 10 charm candidates decaying to ≈3 charged particles plus neutrals have been observed. Background due to secondary interactions for events of such topology is estimated to be ≈3. Background due to strange particle decays is estimated to be negligible. The rest of the events are attributed to Λc + and D ± decays. This leads to a value of 91±35 µb/nucleon for the total charged charm production cross section. Using production cross section for D ± from other experiments we obtain Λc + production cross section as 62±27 µb/nucleon. Two cases of pair production of charm have been seen.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
ID Code:15040
Deposited On:13 Nov 2010 13:06
Last Modified:02 Jun 2011 11:02

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