Statistical and Dynamic Models of Charge Balance Functions

Abstract

Charge balance functions, which identify balancing particle-antiparticle pairs on a statistical basis, have been shown to be sensitive to whether hadronization is delayed by several fm/c in relativistic heavy ion collisions. Results from two classes of models are presented here, microscopic hadronic models and thermal models. The microscopic models give results which are contrary to recently published pi+pi- balance functions from the STAR collaboration, whereas the thermal model roughly reproduce the experimental results. This suggests that charge conservation is local at breakup, which is in line with expectations for a delayed hadronization. Predictions are also presented for balance functions binned as a function of Q_inv.

12 pages 6 figures

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• Narrowing of the Balance Function with Centrality in Au+Au Collisions at sqrt(sNN) = 130 GeV
• Balance Functions, Correlations, Charge Fluctuations and Interferometry
• The effect of finite-range interactions in classical transport theory
• Removing Distortions from Charge Balance Functions
• Charged particle fluctuations and microscopic models of nuclear collisions
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Cited by in corpus (28)

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• Beam-Energy and System-Size Dependence of Dynamical Net Charge Fluctuations
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• Identifying the Charge Carriers of the Quark-Gluon Plasma
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• Evolution of Charge Fluctuations and Correlations in the Hydrodynamic Stage of Heavy Ion Collisions
• Azimuthal angle dependence of the charge imbalance from charge conservation effects
• Longitudinal hydrodynamic expansion and long rangle correlations
• Toward a description of the centrality dependence of the charge balance function in the HYDJET++ model
• Charge Conservation and Higher Moments of Charge Fluctuations
• Quark charge balance function and hadronization effects in relativistic heavy ion collisions
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• $B\to K_1(1270)(\to \rho K){\ell }^{+}{\ell }^{-}$ in LEET
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• Balance functions of charged hadron pairs $(\pi ,K,p)\otimes (\pi ,K,p)$ in Pb--Pb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$2.76 TeV