Mass dependence of the HBT radii observed in e + e − annihilation

Mass dependence of HBT correlations in e + e − annihilation

Rapidity dependence of HBT correlation radii in non-boost invariant models

Hanbury-Brown Twiss (HBT) correlation measurements provide valuable information about the phase space distribution of matter in ultrarelativistic heavy-ion collisions. The rapidity dependence of HBT radii arises from a nontrivial interplay between longitudinal and transverse expansion and the time dependence of the freeze-out pattern. For a non-accelerating longitudinal expansion the dependence...

Pion Interferometry: Recent results from SPS

Recent HBT results from the CERES experiment at the SPS are reviewed. Emphasis is put on the centrality and beam energy dependence, and the results are put into perspective with results at lower and higher beam energies. The rather weak beam energy dependence of the HBT radii may be understood in terms of a transition from baryon to pion dominated freeze-out. The observed short lifetimes and em...

Rapidity Dependence of HBT radii based on a hydrodynamical model

We calculate two-pion correlation functions at finite rapidities based on a hydrodynamical model which does not assume explicit boost invariance along the collision axis. Extracting the HBT radii through χ2 fits in both Cartesian and Yano-Koonin-Podgoretskiı̆ parametrizations, we compare them with the experimental results obtained by the PHOBOS. Based on the results, we discuss longitudinal expa...

Kaon HBT radii from perfect fluid dynamics using the Buda-Lund model

In this paper we summarize the ellipsoidally symmetric Buda-Lund model’s results on HBT radii. We calculate the Bose-Einstein correlation function from the model and derive formulas for the transverse momentum dependence of the correlation radii in the Bertsch-Pratt system of out, side and longitudinal directions. We show a comparison to √ sNN = 200GeV RHIC PHENIX two-pion correlation data and ...