A precise measurement of the Ds meson lifetime
by P.L. Frabetti et al.
A precise measurement of the Ds meson lifetime is reported.
The data were accumulated by the high energy photoproduction
experiment E-687 at Fermilab in the 1990--1991 fixed target run.
The measurement has been done using 900 fully reconstructed
Ds --> phi pi decays.
The lifetime of the Ds meson is measured
to be 0.475 +- 0.020 +- 0.007 ps.