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Study of charmed particle production in hadronic collisions

Thesis/Dissertation ·
OSTI ID:6350053
Events in 200 GeV/c pion-Beryllium collisions, at Fermi National Accelerator Laboratory, which contain a muon and electron of opposite sign are considered. Such events cannot come from the decay of any known particle, and are attributed to the semileptonic decays of a pair of charmed mesons. A moderate acceptance muon trigger arm was implemented to key on the semileptonic decay of one of the charmed pair and the coincident electron was identified in a lead-liquid argon electromagnetic shower calorimeter. A total of 351 +/- 105 events were observed. Assuming the signal derives from charmed meson pairs, and using a central production model for their creation, the total charmed production cross section for pions incident on Beryllium at ..sqrt..s = 19.4 GeV is estimated to be 14 +/- 4 ..mu..b/nucleon.
Research Organization:
Northwestern Univ., Evanston, IL (USA)
OSTI ID:
6350053
Country of Publication:
United States
Language:
English