Pion interferometry in Au+Au collisions at S(NN)**(1/2) = 200-GeV

The STAR collaboration
Phys.Rev.C 71 (2005) 044906, 2005.

Abstract
We present a systematic analysis of two-pion interferometry in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV using the STAR detector at RHIC. We extract the HBT radii and study their multiplicity, transverse momentum, and azimuthal angle dependence. The Gaussianess of the correlation function is studied. Estimates of the geometrical and dynamical structure of the freeze-out source are extracted by fits with blast wave parameterizations. The expansion of the source and its relation with the initial energy density distribution is studied.

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    1D correlation function for different values of SL (antisplitting cut).

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    1D correlation functions for differeny values of the maximum fraction of merged hits allowed.

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    Projections of the 3 dimensional correlation function and corresponding fits for negative pions from the 0-5% most central events and...

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    HBT parameters for the three possible fitting procedures to the correlation functions described in this paper depending on how Coulomb...

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    HBT parameters for the three possible fitting procedures to the correlation functions described in this paper depending on how Coulomb...

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    HBT parameters for the three possible fitting procedures to the correlation functions described in this paper depending on how Coulomb...

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    HBT parameters for the three possible fitting procedures to the correlation functions described in this paper depending on how Coulomb...

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    1D correlation function for pi+pi- compared to standard, Bowler-Sinyukov, and a thoretical calculation that includes Coulomb and strong interactions.

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    Momentum resolution for pions at midrapidity expressed by the widths dp_T/p_T, dphi and dtheta as a function of p.

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    Squared HBT radii relative to the reaction plane angle, without and with the reaction plane resolution applied, for two different...

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    Squared HBT radii relative to the reaction plane angle, without and with the reaction plane resolution applied, for two different...

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    Squared HBT radii relative to the reaction plane angle, without and with the reaction plane resolution applied, for two different...

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    Squared HBT radii relative to the reaction plane angle, without and with the reaction plane resolution applied, for two different...

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    Squared HBT radii relative to the reaction plane angle, for the case where the lambda parameter is averaged and fixed...

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    Squared HBT radii relative to the reaction plane angle, for the case where the lambda parameter is averaged and fixed...

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    Squared HBT radii relative to the reaction plane angle, for the case where the lambda parameter is averaged and fixed...

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    Squared HBT radii relative to the reaction plane angle, for the case where the lambda parameter is averaged and fixed...

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    Fourier coefficients as a function of the maximum fraction of merged hits for the 5% most central events and kT...

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    Projections of the 3 dimensional correlation function and fits to Eq. (10) and with the Edgeworth expansion to Eq. (17)...

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    HBT parameters for the 0-5% most central events for fits to Eq. (10) and to Eq. (17) with no expansion.

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    HBT parameters for the 0-5% most central events for fits to Eq. (10) and to Eq. (17) upto 4th order...

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    HBT parameters for the 0-5% most central events for fits to Eq. (10) and to Eq. (17) upto 6th order...

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    HBT parameters for the 0-5% most central events for pi+pi+ and pi-pi- correlation functions.

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    HBT parameters from STAR and PHENIX at the same beam energy for the 0-30% most central events.

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    Energy dependence of the pi- HBT parameters for central Au+Au, Pb+Pb, and Pb+Au collisions at midrapidity and k_T ~ 0.2...

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    HBT parameters vs. m_T for 6 different centralities.

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    Fourier coefficients of azimuthal oscillations of HBT radii vs. numer of participating nucleons, for pi+ and pi- pairs separately (0.25...

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    Comparison between the HBT radii obtained from the azimuthally integrated (traditional) HBT analysis and the 0th-order Fourier coefficients from the...

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    HBT radius parametres for 6 different centralities.

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    Extracted parameters R' and alpha, from the power-law fits to the HBT radius parameters.

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    Extracted freeze-out source radius extracted from a blast wave fit; source radius Rgeom from fits to Rside; and 2*Rside for...

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    HBT parameter Rside.

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    R - Rinitial (top panel) and R/Rinitial (bottom panel) for the azimuthally integrated analysis for the azimuthally-sensitive case vs. number...

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    R - Rinitial (top panel) and R/Rinitial (bottom panel) for in the x (in-plane) and y (out-of-plane) directions for the...

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    R - Rinitial for the azimuthally integrated analysis for the azimuthally-sensitive case vs. (dN/dy)/Rinitial.

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    R - Rinitial in the x (in-plane) direction for the azimuthally-sensitive case vs. (dN/dy)/Rinitial.

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    R - Rinitial in the y (out-of-plane) direction for the azimuthally-sensitive case vs. (dN/dy)/Rinitial.

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    Longitudinal HBT radius Rl.

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    Evolution time tau vs. number of participants as extracted from a fit to Rl, lines in Fig. 26 (triangles), and...

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    R - Rinital for the azimuthally integrated analysis and for the in-plane and out-of-plane directions vs. beta_T,max*tau.

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    R - Rinital for the azimuthally integrated analysis and for the in-plane and out-of-plane directions vs. beta_T,max*tau.

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    R - Rinital for the azimuthally integrated analysis and for the in-plane and out-of-plane directions vs. beta_T,max*tau.

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    Emission duration time dTau vs. number of participants as extracted using a blast wave fit to HBT parameters and spectra.

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    Final source eccentricity as calculated from the Fourier coefficients (2R_{s,2}^2/R_{s,0}^2) and from the final in-plane and out-of-plane radii vs. initial...

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