Transverse and Longitudinal Bose-Einstein Correlations in e+e- annihilation

Abstract

We show how a difference in the correlation length longitudinally and transversely, with respect to the jet axis in e+e- annihilation, arises naturally in a model for Bose-Einstein correlations based on the Lund string model. The difference is more apparent in genuine three-particle correlations and they are therfore a good probe for the longitudinal stretching of the string field.

Comments: 4+1 pages. To appear in 'The Proceedings of the EPS Conference HEP97, Jerusalem, August 1997'