Measurement of the $Λ_{c}^{+}$ Lifetime

Details Measurement of the $Λ_{c}^{+}$ Lifetime Measurement of the $Λ_{c}^{+}$ Lifetime

2000-11-15

arxiv.org/abs/hep-ex/0011049v1

Phys.Rev.Lett.86:2232-2236,2001

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS

Scientific paper

10.1103/PhysRevLett.86.2232

The $\Lambda_{c}^{+}$ lifetime is measured using 9.0 fb$^{-1}$ of $e^+e^-$ annihilation data collected on or just below the $\Upsilon(4S)$ resonance with the CLEO II.V detector at CESR. Using an unbinned maximum likelihood fit, the $\Lambda_{c}^{+}$ lifetime is measured to be $(179.6 \pm 6.9(stat.) \pm 4.4(syst.))$ fs. The precision of this colliding beam measurement is comparable to other measurements, which are based on fixed target experiments with different systematic errors.

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