BOSE-EINSTEIN CORRELATIONS IN THE INVARIANT Q(2) VARIABLE AND INTERMITTENCY

The dependence of two-particle Bose-Einstein correlations on the squared invariant momentum difference Q(2) has been calculated in several models with fixed space-time sizes of the pion source. The complex relationship between the apparent radius and incoherence factor of the source measured with the help of Q and the ''true'' radii and incoherence factors is established. The resulting correlation functions have a sharp and approximately powerlike peak at small Q in agreement with preliminary data of the UA1 Collaboration. The appearance of this powerlike peak at small Q due to the kinematics of the Q variable implies that the observed Q dependence does not necessarily constitute evidence either for intermittency or for a fractal nature of the source.