Title

Resonance structure of [formula presented] decays

Document Type

Article

Publication Date

1-1-2000

Abstract

Using a sample of 4.7 (Formula presented) integrated luminosity accumulated with the CLEO II detector at the Cornell Electron Storage Ring (CESR), we investigate the mass spectrum and resonant structure in (Formula presented) decays. We measure the relative fractions of (Formula presented) and (Formula presented) resonances in these decays, as well as the (Formula presented) masses and widths. Our fitted (Formula presented) resonances are somewhat broader than previous hadroproduction measurements, and in agreement with recent CERN LEP results from tau decay. The larger central value of our measured width supports models which attribute the small (Formula presented) branching fraction to larger (Formula presented) widths than are presently tabulated. We also determine the (Formula presented) mixing angle (Formula presented). © 2000 The American Physical Society.

Publication Name

Physical Review D - Particles, Fields, Gravitation and Cosmology

Volume Number

62

First Page

11

Issue Number

7

DOI

10.1103/PhysRevD.62.072006

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