Simple Z_0∗ˆ\_{0}\^{*} model (Isoscalar KN scattering)

A model for isoscalar KN scattering near the K*N threshold is constructed, and solved analytically in the approximation of retaining only pion exchange terms. Basic features of phenomenological phase shifts are reproduced, including a wide J/sup P/=1/2/sup +/ exotic resonance, Z/sub 0/* (1800). (19 refs)

Implications of the recent "e+e−→^{+}e^{-}\rightarrow hadron + X" data on the leptonic world

The authors examine phenomenologically the reaction e/sup +/e/sup -/ producing hadrons+X, in the light of new CEA and SPEAR data. (14 refs)