The Ξc+ lifetime is measured using 9.0 fb -1 of e+e- annihilation data collected on and just below the Y(45) resonance with the CLEO II.V detector at CESR. This is the first measurement of the Ξc+ lifetime from a collider experiment. Using an unbinned maximum likelihood fit, the Ξc + 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.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics