We present the final results on the D-meson liftime measurements obtained by the NA27 experiment. From a sample of 145 D0/D0bar and 149D± decays, we have measured τ(D0)=(4.6+0.6−0.5)×10−13 s, τ(D±)=(11.2+1.4−1.1)×10−13 s, with a ratio R= τ(D±)/ τ(D0)=2.4±0.4.
D-meson lifetimes
CASO, CARLO;CONTRI, ROBERTO;FONTANELLI, FLAVIO;MONGE, MARIA ROBERTA;SQUARCIA, SANDRO;TREVISAN, UMBERTO;
1987-01-01
Abstract
We present the final results on the D-meson liftime measurements obtained by the NA27 experiment. From a sample of 145 D0/D0bar and 149D± decays, we have measured τ(D0)=(4.6+0.6−0.5)×10−13 s, τ(D±)=(11.2+1.4−1.1)×10−13 s, with a ratio R= τ(D±)/ τ(D0)=2.4±0.4.
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