Bose-Einstein correlations in e+e− annihilation in the γ(1S) and continuum
ABSTRACT Bose-Einstein correlations in direct γ(1S) decays and continuum in the energy region √s=7.2−10.3 GeV have been studied using
data taken with the MD-1 detector at VEPP-4 storage ring. Assuming gaussian density of the pion source the data indicate the
radius of the sourceπ=0.73±0.10±0.04 fm for direct γ (1S) decays andπ=0.83±0.22±0.05 fm for the continuum. The correlation strengthsλ for both data samples also are similar. Thus Bose-Einstein correlations do not reveal a noticeable difference between quark
and gluon fragmentation.