Measurement of the Xi^+_c Lifetime

Details Measurement of the Xi^+_c Lifetime Measurement of the Xi^+_c Lifetime

2001-10-24

arxiv.org/abs/hep-ex/0110058v2

Phys.Rev.D65:031102,2002

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, submitted to PRD, Rapid Communications

Scientific paper

10.1103/PhysRevD.65.031102

The Xi^+_c lifetime is measured using 9.0 fb^-1 of e+e- annihilation data collected on and just below the Upsilon(4S) resonance with the CLEO II.V detector at CESR. This is the first measurement of the Xi^+_c lifetime from a collider experiment. Using an unbinned maximum likelihood fit, the Xi^+_c lifetime is measured to be 503 +/- 47 (stat.) +/- 18 (syst.) fs. The precision of this measurement is comparable to previous measurements carried out by fixed target experiments with different sources of systematic uncertainties.

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