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.
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Aligharh Collaboration., Bombay Collaboration., Chandigarh Collaboration. et al. Charged charm production in proton-emulsion interactions at 400 GeV/c. Z. Phys. C - Particles and Fields 27, 325–328 (1985). https://doi.org/10.1007/BF01548635
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DOI: https://doi.org/10.1007/BF01548635