Bose-Einstein Correlations of Positive Pions in Collisions of Nb+Nb and Au+Au at 650 A MeV
Abstract
Two-pion interferometry analysis of the Plastic Ball data for Au+Au and Nb+Nb interactions at 650 A MeV kinetic energy is presented. The values of 3.4±0.4 fm and 4.8±0.6 fm for pion source sizes and 3.6±0.8 fm/c and 5.7±0.7 fm/c for lifetimes are obtained for the Nb+Nb and Au+Au cases, respectively. No significant change in radius as a function of multiplicity has been observed. However, the selection of π+ with low momenta in the center of mass system reveals an enlarged radius for the Au+Au system but no such increase for Nb+Nb.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- 1988
- DOI:
- 10.1142/S0217732388002105
- Bibcode:
- 1988MPLA....3.1745B