Lifetime measurement of Λc

Abstract We report on the Λ c properties observed with the LEBC-EHS set-up at CERN SPS with 360 GeV c π − and 400 GeV c p beams. The lifetime is (1.2 −0.3 +0.5 )×10 −13 s and the mass (2284.7 ± 2.3 ± 0.5)MeV c 2 .