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Comments on Hera-B

Owing to the very high interaction rate and unfriendly environment (fixed target experiment with 4 interactions/bunch crossing on average) Hera-B clearly is the most difficult experiment to be judged in this context. Although many more charmed hadrons should be produced in minimum bias interactions as compared to COMPASS the very stringent trigger conditions requiring a J/ tex2html_wrap_inline2748 in the final state suppress charm events from direct production. Owing to their short lifetime charmed baryons are difficult to detect, in particular in a high track multiplicity environment. The use of only one spectrometer magnet strongly reduces the acceptance for decays with hyperons in the final state. Therefore competition may only be important concerning charmed mesons. It should be noted that no estimates on the quality of charm physics could currently be obtained from this collaboration [13].



Lars Schmitt
Wed May 22 16:44:09 METDST 1996