The Interplay of Femtoscopic and Charge-Balance Correlations

Abstract

Correlations driven by the constraints of local charge conservation have been shown to provide insight into the chemical evolution and diffusivity of the high-temperature matter created in ultra-relativistic heavy ion collisions. Two-particle correlations driven by final-state interactions have allowed the extraction of critical femtoscopic space-time information about the expansion and dissolution of the same collisions. Whereas correlations from final-state interactions mainly appear at small relative momenta, a few tens of MeV/$c$, charge-balance correlations extend over a range of hundreds of MeV/$c$. In nearly all previous analyses, this separation of scales is used to focus solely on one class or the other. The purpose of this study is to quantitatively understand the degree to which correlations from final-state interactions distort the interpretation of charge-balance correlations and vice versa.

24 pages, 6 figures

References in corpus (6)

• Electrical conductivity and charge diffusion in thermal QCD from the lattice
• Constraining the Eq. of State of Super-Hadronic Matter from Heavy-Ion Collisions
• Evolving Charge Correlations in a Hybrid Model with both Hydrodynamics and Hadronic Boltzmann Descriptions
• Charge Balance Functions for Heavy-Ion Collisions at LHC Energies
• Constraining baryon annihilation in the hadronic phase of heavy-ion collisions via event-by-event fluctuations
• Charge Conservation and Higher Moments of Charge Fluctuations

Cited by in corpus (2)

• Effects of Non-Vanishing Net Charge in Balance Functions
• Using Baryonic Charge Balance Functions to Resolve Questions about the Baryo-Chemistry of the QGP