The Λc+ lifetime is measured using 9.0 fb−1 of e+e− annihilation data collected on or just below the Υ(4S) resonance with the CLEO II.V detector at CESR. Using an unbinned maximum likelihood fit, the Λc+ lifetime is measured to be (179.6±6.9(stat.)±4.4(syst.)) fs. The precision of this colliding beam measurement is comparable to other measurements, which are based on fixed target experiments with different systematic errors.
@article{arxiv.hep-ex/0011049,
title = {Measurement of the $\Lambda_{c}^{+}$ Lifetime},
author = {A. H. Mahmood and CLEO Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0011049},
year = {2010}
}
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9 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS