Title

Measurement of B(Λc+→pK-π+)

Document Type

Article

Publication Date

10-1-2000

Abstract

The Λ →pK π yield has been measured in a sample of two-jet continuum events containing both a charm tag ("D̄") as well as an antiproton (e e →D̄p̄X), with the antiproton in the hemisphere opposite the D̄ (measurement of charge conjugate modes is implicit throughout). Under the hypothesis that such selection criteria tag e e →D̄p̄Λ X events, the Λ →pK π branching fraction can be determined by measuring the pK π yield in the same hemisphere as the antiprotons in our D̄p̄X sample. Three types of D charm tags are used, π (from D* →D̄ π ), electrons (from D̄→Xe v), and fully reconstructed D̄ →K π or D →K π π or D →φπ . Combining our results obtained from the three independent charm tags, we obtain B(Λ →pK π )=(5.0±0.5±1.2)%. ©2000 The American Physical Society. c c c soft soft s c + - + + - + - + + - + - + - - 0 - - 0 + - - + - - - - + - +

Publication Name

Physical Review D - Particles, Fields, Gravitation and Cosmology

Volume Number

62

First Page

1

Last Page

18

Issue Number

7

Article

072005

This document is currently not available here.

Share

COinS