Measurement of the branching ratiosψ′→e+e−,ψ′→J/ψπ0π0andψ′→J/ψη

11 July 2000

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 62 (3) , 032004
https://doi.org/10.1103/physrevd.62.032004

Abstract

We have determined the following

ψ^{'}

branching ratios using the large event sample collected by Fermilab experiment E835 in the reaction

p \bar{p} \to ψ^{'} :

B (ψ^{'} \to e^{+} e^{-}) = (7.4 \pm 0.2 \pm 0.7) \times 10^{- 3},

B (ψ^{'} \to J / ψ π^{0} π^{0}) = (18.7 \pm 0.9 \pm 1.3) %

and

B (ψ^{'} \to J / ψ η) = (4.1 \pm 0.3 \pm 0.5) % .

Keywords

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