Spin and Parity Analysis of $K \bar{K} π$ System in the $D$ and $\frac{E}{Iota}$ Regions

Publisher Website

19 August 1985

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

Vol. 55 (8) , 779-782
https://doi.org/10.1103/physrevlett.55.779

Abstract

We have performed a high-statistics experiment on the reaction

π^{-} p \to K^{+} {\bar{K}}^{0} π^{-} n

at 8.0 GeV/c. A Dalitz-plot analysis of the

K^{+} {\bar{K}}^{0} π^{-}

system finds that the

D (1285)

is a

J^{PG} = 1^{+ +}

state coupling predominantly to a

δ π

decay channel, while the

E (1420)

peak consists mostly of a

J^{PG} = 0^{- +}

wave with a substantial

δ π

decay mode. There is little evidence of a

1^{+ +}

resonance at the

E

mass.

Keywords

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