Measurement of the product branching fraction B(cΘcX)×B(ΘcΛX)

R. Ammar et al. (CLEO Collaboration)
Phys. Rev. D 62, 092007 – Published 12 October 2000
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Abstract

Based on a high statistics e+ecc¯ data sample, we report on the inclusive rate for charmed baryons to decay into Λ particles using charm-event tagging. We select e+ecc¯ events which have a clear anti-charm tag and measure the Λ content in the hemisphere opposite the tag (charge conjugate modes are implicit). This allows us to determine the product branching fraction BΛ=B(cΘcX)×B(ΘcΛX), where Θc represents a sum over all charmed baryons produced in e+e fragmentation at s=10.5 GeV, given our specific tags. We obtain BΛ=(1.87±0.03±0.33)%.

  • Received 28 April 2000

DOI:https://doi.org/10.1103/PhysRevD.62.092007

©2000 American Physical Society

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Vol. 62, Iss. 9 — 1 November 2000

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