2 research outputs found
A Measurement of the Decay Asymmetry Parameters in \Xi_{c}^{0}\to \X^{-}\pi^{+}
Using the CLEO II detector at the Cornell Electron Storage Ring we have
measured the decay asymmetry parameter in the decay . We find , using the world average value of
we obtain . The physically allowed range of a decay
asymmetry parameter is . Our result prefers a negative value:
is at the 90% CL. The central value occupies the
middle of the theoretically expected range but is not yet precise enough to
choose between models.Comment: 10 pages postscript, also available through
http://w4.lns.cornell.edu/public/CLN
Observation of the Cabibbo-suppressed charmed baryon decay Λ<sub>c</sub><sup>+</sup>→pφ
We report the observation of the Cabibbo-suppressed decays Λ<sub>c</sub><sup>+</sup>→pK<sup>-</sup>K<sup>+</sup> and Λ<sub>c</sub><sup>+</sup>→pφ using data collected with the CLEO II detector at CESR. The latter mode, observed for the first time with significant statistics, is of interest as a test of color suppression in charm decays. We have determined the branching ratios for these modes relative to Λ<sub>c</sub><sup>+</sup>→pK<sup>-</sup>K<sup>+</sup> and compared our results with theory