Two-pion interferometry at small relative momentum for pion sources with transverse and longitudinal expansions in relativistic heavy ion collisions

2004 ◽  
Vol 13 (3) ◽  
pp. 341-343
Author(s):  
Chen Xiao-Fan ◽  
Yang Xue-Dong ◽  
Han Ling
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Relative Momentum ◽  
Ion Collisions ◽  
Pion Interferometry

Two-Proton Interferometry at Small Relative Momentum in Relativistic Heavy Ion Collisions

2001 ◽  
Vol 18 (11) ◽  
pp. 1452-1453
Author(s):  
Chen Xiao-Fan ◽  
Yang Xue-Dong ◽  
Chen Zhi-Lai ◽  
Han Ling
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Relative Momentum ◽  
Ion Collisions

scholarly journals q-BOSON APPROACH TO MULTIPARTICLE CORRELATIONS

2000 ◽  
Vol 15 (26) ◽  
pp. 1637-1646 ◽  
Author(s):  
D. V. ANCHISHKIN ◽  
A. M. GAVRILIK ◽  
N. Z. IORGOV
Keyword(s):  
Correlation Function ◽  
Heavy Ion Collisions ◽  
Deformation Parameter ◽  
Heavy Ion ◽  
Ideal Gas ◽  
Relativistic Heavy Ion Collisions ◽  
Relative Momentum ◽  
Particle Correlation ◽  
Ion Collisions ◽  
Exact Shape

An approach is proposed enabling one to effectively describe, for relativistic heavy-ion collisions, the observed deviation from unity of the intercept λ (measured value corresponding to zero relative momentum p of two registered identical pions or kaons) of the two-particle correlation function C(p, K). The approach uses q-deformed oscillators and the related picture of ideal gas of q-bosons. In effect, the intercept λ is connected with deformation parameter q. For a fixed value of q, the model predicts specific dependence of λ on pair mean momentum K so that, when |K|≳500–600 MeV/c for pions or when |K|≳700–800 MeV/c for kaons, the intercept λ tends to a constant which is less than unity and determined by q. If q is fixed to be the same for pions and kaons, the intercepts λπ and λK essentially differ at small mean momenta K, but tend to be equal at K large enough (|K|≳800 MeV/c), where the effect of resonance decays can be neglected. We argue that it is of basic interest to check in the experiments on heavy-ion collisions: (i) the exact shape of dependence λ=λ(K), and (ii) whether for |K|≳800 MeV/c the resulting λπ and λK indeed coincide.

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