ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract 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 toΛ c + andD ± decays. This leads to a value of 91±35 μb/nucleon for the total charged charm production cross section. Using production cross section forD ± from other experiments we obtainΛ c + production cross section as 62±27 μb/nucleon. Two cases of pair production of charm have been seen.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01548635
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