LU TP 97-28
October 1997
Transverse and Longitudinal Bose-Einstein Correlations
B. Andersson and M. Ringner
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. In genuine three-particle correlations the difference is
even more apparent and they provide therefore a good probe for the
longitudinal stretching of the string field. The correlation length
between pion pairs is found to be rather independent of the pion
multiplicity and the kaon content of the final state.
published as Phys.Lett. B421, 283 (1998)