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Initial state fluctuations of QCD conserved charges in heavy-ion collisions

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arxiv 1911.10272 v1 pith:YIUPYBTI submitted 2019-11-22 nucl-th hep-ph

Mauricio Martinez , Matthew D. Sievert , Douglas E. Wertepny , Jacquelyn Noronha-Hostler This is my paper · ORCID
classification nucl-thhep-ph
keywords initialchargescollisionsconservedbaryonchargedensityelectric
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We initialize the Quantum Chromodynamic conserved charges of baryon number, strangeness, and electric charge arising from gluon splitting into quark-antiquark pairs for the initial conditions of relativistic heavy-ion collisions. A new Monte Carlo procedure that can sample from a generic energy density profile is presented, called Initial Conserved Charges in Nuclear Geometry (ICCING), based on quark and gluon multiplicities derived within the color glass condensate (CGC) effective theory. We find that while baryon number and electric charge have nearly identical geometries to the energy density profile, the initial strangeness distribution is considerable more eccentric and is produced primarily at the hot spots corresponding to temperatures of $T\gtrsim 400$ MeV for PbPb collisions at $\sqrt{s_{NN}}=5.02$ TeV.

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  1. Initial-State Charge Density Predicts Final-State Net Charge Flow in Heavy-Ion Collisions

    nucl-th 2025-05 conditional novelty 6.0 of 10

    Initial baryon density, through a charge-odd cumulant estimator with a fitted coupling, predicts final net-proton elliptic flow in event-by-event hydrodynamic simulations.

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