Search for CP violation in charm meson decay

We report the results of a search for CP-violating decay rate asymmetries (ACP) in the charm decay modes D+\u2192K-K+pi+, D+\u2192K\uaf*0K+, D+\u2192phi pi+, and D0\u2192K+K-. Our measurements are all consistent with zero asymmetry: ACP(KKpi)=-0.031\ub10.068, ACP(K*K)=-0.12\ub10.13, ACP(phi pi)=0.066\ub10.086, and ACP(KK)=0.024\ub10.084. The data were accumulated by the Fermilab high energy photoproduction experiment E68

Precise measurements of the D0 and D+ meson lifetimes

We report precise measurements of the D0 and D+ meson lifetimes by the E687 Collaboration at Fermilab. The measurements have been made using 16000 fully reconstructed decays of the D0 into the K 12pi+ and K 12pi+pi 12pi+ final states and 9000 decays of the D+ into the K 12pi+pi+ final state. The lifetimes of the D0 and D+ mesons are measured to be 0.413\ub10.004\ub10.003 ps and 1.048\ub10.015\ub101011 ps respectively

PRECISE MEASUREMENT OF THE D(S)+/- MESON LIFETIME.

A precise measurement of the Ds\ub1 meson lifetime is reported. The data were accumulated by the high energy photoproduction experiment E687 at Fermilab in the 1990\u20131991 fixed target run. The measurement has been done using 900 fully reconstructed Ds\ub1\u2192phi pi\ub1 decays. The lifetime of the Ds\ub1 meson is measured to be 0.475\ub10.020\ub10.007 p

MEASUREMENT OF THE LIFETIME OF THE XI(C)(0)

A measurement of the lifetime of the charmed strange baryon XIc0 is presented. The data were accumulated by the Fermilab high energy photoproduction experiment E687. The measurement has been made using 42\ub110 XIc0\u2192XI-pi+ decays. The lifetime of the XIc0 is measured to be 0.101-0.017+0.025\ub10.005 ps and its mass is measured to be 2462.1\ub13.1\ub11.4 MeV/c

MEASUREMENT OF THE MASS AND LIFETIME OF THE XIc+

Measurements of the mass and lifetime of the \u39ec+ decaying into \u39e-pi+pi+ are presented. The data were accumulated by the Fermilab high-energy photoproduction experiment E687. The mass of the \u39ec+ is measured to be 2464.4\ub12.0\ub11.4 MeV/c2 and the lifetime is measured to be 0.41-0.08+0.11\ub10.02 ps