FOCUS is a heavy-flavor photoproduction experiment located at the Wide Band Area of Fermilab. It is an upgraded version of its predecessor, E687.
The experiment is collected data during the 1996-97 fixed target run, and is investigating several topics in charm physics including high precision studies of charm semileptonic decays, QCD studies using double charm events, a measurement of the absolute branching fraction for the D0 meson, a systematic investigation of charm baryons and their lifetimes, and searches for D0 mixing, CP violation, rare and forbidden decays, and fully leptonic decays of the D+. Based on experience with E687, FOCUS expects to fully reconstruct 106 charm particle decays.
The graphic to the right shows how many golden
E831 is an international collaboration of the following countries (in alphabetical order):
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Arthur Kreymer, Dario Menasce & Francesco Prelz