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Measurement of charm meson lifetimes
Ammar, Raymond G. Baringer, Philip S. Bean, Alice Besson, David Zeke Coppage, Don Davis, Robin E. P. Kravchenko, I. Kwak, Nowhan Zhao, L.
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Davis, Robin E. P.
Kravchenko, I.
Kwak, Nowhan
Zhao, L.
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Abstract
We report measurements of the D-0, D-,(+) and D-s(+) meson lifetimes using 3.7 fb(-1) of e(+)e(-) annihilation data collected near the Y(4S) resonance with the CLEO detector. The measured lifetimes of the D-0, D+, and D-s(+) mesons are 408.5 +/- 4.1(-3.4)(+3.5) fs, 1033.6 +/- 22.1(-12.7)(+9.9) fs, and 486.3 +/- 15.0(-5.1)(+4.9) fs. The precisions of these lifetimes are comparable to those of the best previous measurements, and the systematic errors are very different. In a single experiment we find that the ratio of the D-s(+) and D-0 lifetimes is 1.19 +/- 0.04. [S0031-9007(99)09313-8].
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1999-06
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AMERICAN PHYSICAL SOC
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Bonvicini, G, Cinabro, D, et al. Measurement of charm meson lifetimes. AMERICAN PHYSICAL SOC. June 1999. 82(23) : 4586-4590