COULOMB AND STRONG-INTERACTIONS FOR BOSE-EINSTEIN CORRELATIONS

We present an analytical formula for the Bose-Einstein correlations (B EG) which includes effects of both Coulomb and strong final state inte ractions (FSI). It was obtained by using Coulomb wave function togethe r with the scattering partial wave amplitude of the strong interaction s describing data on the s-wave phase shift. We have proved numericall y that this method is equivalent to solving Schrodinger equation with Coulomb and the s-wave strong interaction potentials. As an applicatio n we have analysed, using our formula which includes the degree of coh erence and the long range correlation, the data for e(+)e(-) annihilat ions. We have found that the degree of coherence present in our formul a approaches approximately unity whereas the long range correlation pa rameter becomes approximately zero. These results suggest that the phy sical meanings of the fractional degree of coherence and the long rang e correlation observed in various other analyses can most probably be attributed to FSI.