The authors generalize their prior spherical-source method to non-spherical sources with a self-consistent treatment of Coulomb interactions and provide software for three-dimensional correlation functions.
Beam energy dependent two-pion interferometry and the freeze-out eccentricity of pions in heavy ion collisions at STAR
4 Pith papers cite this work, alongside 114 external citations. Polarity classification is still indexing.
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abstract
We present results of analyses of two-pion interferometry in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV measured in the STAR detector as part of the RHIC Beam Energy Scan program. The extracted correlation lengths (HBT radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass ($m_{T}$) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.
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UNVERDICTED 4representative citing papers
Residual Coulomb and isospin effects produce charge-dependent splittings in identical-particle correlation functions, strongest at low kT, that modify fitted radii.
An expanding fire-cylinder model fitted to pion pT spectra describes spectra of other light hadrons and qualitatively matches their elliptic flow in peripheral Au+Au collisions at BES energies.
UrQMD model simulations of K* resonances in Ar+Sc collisions at SPS energies capture essential features but underpredict the strong suppression observed in central NA61/SHINE data.
citing papers explorer
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A self-consistent calculation of non-spherical Bose-Einstein correlation functions with Coulomb final-state interaction
The authors generalize their prior spherical-source method to non-spherical sources with a self-consistent treatment of Coulomb interactions and provide software for three-dimensional correlation functions.
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When positive and negative pairs differ in femtoscopy: residual Coulomb and isospin effects
Residual Coulomb and isospin effects produce charge-dependent splittings in identical-particle correlation functions, strongest at low kT, that modify fitted radii.
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Spectra and elliptic flow of light hadrons in an expanding fire-cylinder model for the RHIC Beam Energy Scan
An expanding fire-cylinder model fitted to pion pT spectra describes spectra of other light hadrons and qualitatively matches their elliptic flow in peripheral Au+Au collisions at BES energies.
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$K^*(892)$ Resonance Suppression in Ar+Sc Collisions at SPS Energies
UrQMD model simulations of K* resonances in Ar+Sc collisions at SPS energies capture essential features but underpredict the strong suppression observed in central NA61/SHINE data.