EVIDENCE FOR EXPANSION OF A HOT FIREBALL FROM 2-PION CORRELATIONS FORSI+PB COLLISIONS AT AGS ENERGY

Authors
BARRETTE J BELLWIED R BRAUNMUNZINGER P CLELAND WE CORMIER TM DAVID G DEE J DIEBOLD GE DIETZSCH O GERMANI JV GILBERT S GREENE SV HALL JR HEMMICK TK HERRMANN N HONG B JAYANANDA K KRAUS D KUMAR BS LACASSE R LISSAUER D LLOPE WJ LUDLAM TW MCCORKLE S MAJKA R MARK SK MITCHELL JT MUTHUSWAMY M OBRIEN E PANITKIN S PRUNEAU C RAO MN ROTONDO F DASILVA NC SONNADARA U STACHEL J TAKAI H TAKAGUI EM THROWE TG VOLOSHIN S WANG G WOLFE D WOODY CL XU N ZHANG Y ZHANG Z ZOU C
Citation
J. Barrette et al., EVIDENCE FOR EXPANSION OF A HOT FIREBALL FROM 2-PION CORRELATIONS FORSI+PB COLLISIONS AT AGS ENERGY, Physics letters. Section B, 333(1-2), 1994, pp. 33-38
Citations number
35
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
333
Issue
1-2
Year of publication
1994
Pages
33 - 38
Database
ISI
SICI code
0370-2693(1994)333:1-2<33:EFEOAH>2.0.ZU;2-3
Abstract
The two-pion correlation function has been measured for charged pions produced in central 14.6 A GeV/c Si + Pb collisions at the AGS. Data f or like-sign pions show a clear quantum interference effect as expecte d for identical bosons. The experimental correlation function agrees w ell with that obtained for events generated by a cascade code (RQMD). The present data are consistent with a time-averaged rms freeze-out ra dius of 8.3 fm and a mean duration of pion emission of 9 fm/c. The sys tem has expanded considerably before freeze-out.