Bombarding energy dependence of pi(-) interferometry at the Brookhaven AGS

Citation
Ma. Lisa et al., Bombarding energy dependence of pi(-) interferometry at the Brookhaven AGS, PHYS REV L, 84(13), 2000, pp. 2798-2802
Citations number
44
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
84
Issue
13
Year of publication
2000
Pages
2798 - 2802
Database
ISI
SICI code
0031-9007(20000327)84:13<2798:BEDOPI>2.0.ZU;2-J
Abstract
We present the first excitation function of pi(-) intensity interferometry at Alternating Gradient Synchrotron (AGS) energies (2-8 A GeV). The sensiti vity of the multidimensional correlation functions to the geometry and dyna mics of the pion-emitting system provides a stringent test of transport mod els of heavy ion collisions. Detailed comparisons with a realistic transpor t model, both with and without an explicit nuclear mean field, suggest that the beam energy evolution in the reaction dynamics is different in the mod el than in the data. A significantly increased pi(-) emission time scale, w hich has been suggested as a signal of the onset of the transition to quark -gluon plasma, is not observed.