Properties of the $a_{0} (980)$ meson

Publisher Website

13 November 1998

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

Vol. 59 (1) , 012001
https://doi.org/10.1103/physrevd.59.012001

Abstract

Events of the type

π^{-} \vec{p} n η π^{+} π^{-}

and

π^{-} \vec{p} n η π^{0}

at

18 GeV / c

are analyzed. The mass and width of the neutral and charged

a_{0} (980)

were determined. The neutral

a_{0}

is found to have a mass of

(0.991 \pm 0.0025) GeV {/ c}^{2}

and a width of

(0.069 \pm 0.011) GeV {/ c}^{2} .

A partial wave analysis technique yields

(0.9983 \pm 0.0040)

and

(0.072 \pm 0.010) GeV {/ c}^{2}

for the mass and width of the charged

a_{0} .

Keywords

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Version 1, 1996-08-29, ArXiv

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