A. Bertin et al., STUDY OF THE ISOVECTOR SCALAR MESONS IN THE CHANNEL (P)OVER-BAR-P-]K(+ -)K-S(0)PI(-/+) AT 3 HYDROGEN TARGET DENSITIES/, Nuclear physics. B, 1997, pp. 262-269
The study of the I = 1,0(++) states with the OBELIX detector in the ch
annel <(p)over bar p> --> (K+/-KS0) pi(-/+) at three different target
densities is reported. We discuss in particular the results about a(0)
(980) and the evidence of an extra scalar state with mass 1.29 +/- 0.0
1 GeV/c(2) and width 0.080 +/- 0.005 GeV/c(2).