Measurements of charmed meson lifetimes

Measurements of charmed meson lifetimes are reviewed. Bare emulsion and track chamber experiments which indicated that charm lifetimes were of the order of 10−13 sec. are briefly discussed. Fitted decay events from four hybrid emulsion experiments giva lifetime velues of gD0 = .94×10−13 sec gD+ = 10.3×10−13 sec and tF+ = 2.0×10−13 sec.