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Title: Chaoticity parameter λ in two-pion interferometry in an expanding boson gas model

Journal Article · · Journal of Physics. G, Nuclear and Particle Physics
 [1];  [1];  [1];  [2]
  1. Dalian Univ. of Technology, Dalian (China). School of Physics and Optoelectronic Technology
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division

We investigate the chaoticity parameter λ in two-pion interferometry in an expanding boson gas model. The degree of Bose-Einstein condensation of identical pions, density distributions, and Hanbury-Brown-Twiss (HBT) correlation functions are calculated for the expanding gas within the mean-field description with a harmonic oscillator potential. The results indicate that a sources with thousands of identical pions may exhibit a degree of Bose-Einstein condensation at the temperatures during the hadronic phase in relativistic heavy-ion collisions. This finite condensation may decrease the chaoticity parameter λ in the two-pion interferometry measurements at low pion pair momenta, but influence only slightly the λ value at high pion pair momentum.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1163596
Journal Information:
Journal of Physics. G, Nuclear and Particle Physics, Vol. 41, Issue 12; ISSN 0954-3899
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (1)

Effect of pion versus kaon interferometry on the chaotic parameter journal May 2015

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