FINAL-STATE INTERACTIONS IN BOSE-EINSTEIN CORRELATIONS AND SOURCE FUNCTIONS

We study the Bose-Einstein correlations (BEG) with the final state int eractions (FSI) based on a framework of Bowler. Several new formulae i ncluding the FSI are utilized in analyses of data for pi(+/-)pi(+/-) p roduction in e(+)e(-) annihilation by TPC, OPAL, DELPHI, and ALEPH Col laborations. Our results show that when the exponential and Gaussian d istributions are used as the source functions the degree of coherence approaches approximately unity here. We analyse also data for (KSKSO)- K-O pairs at Z-pole in e(+)e(-) annihilation and show that within the present statistical errors there is no difference between the BEC for pions and kaons. Moreover, using the same formulae we obtain a fractio nal degree of coherence for the data for BEC in p + p collision by NA2 7 Collaboration.