Causality Constraints on Hadron Production In High Energy Collisions

Abstract

For hadron production in high energy collisions, causality requirements lead to the counterpart of the cosmological horizon problem: the production occurs in a number of causally disconnected regions of finite space-time size. As a result, globally conserved quantum numbers (charge, strangeness, baryon number) must be conserved locally in spatially restricted correlation clusters. This provides a theoretical basis for the observed suppression of strangeness production in elementary interactions (pp, e^+e^-). In contrast, the space-time superposition of many collisions in heavy ion interactions largely removes these causality constraints, resulting in an ideal hadronic resonance gas in full equilibrium.

16 pages,8 figures

References in corpus (5)

• Thermal Hadronization and Hawking-Unruh Radiation in QCD
• A comparative analysis of statistical hadron production
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Cited by in corpus (16)

• Multiplicity dependence of light-flavor hadron production in pp collisions at $\sqrt{s}$ = 7 TeV
• Canonical statistical model analysis of p-p, p-Pb, and Pb-Pb collisions at the LHC
• Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model
• Multiplicity dependence of (multi-)strange baryons in the canonical ensemble with phase shift corrections
• Cumulants of multiple conserved charges and global conservation laws
• Light (anti)nuclei production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Universal Strangeness Production in Hadronic and Nuclear Collisions
• Constraining baryon annihilation in the hadronic phase of heavy-ion collisions via event-by-event fluctuations
• Charged-particle multiplicity dependence of charm-baryon-to-meson ratio in high-energy proton-proton collisions
• Light nuclei in the hadron resonance gas
• Sequential Strangeness Freeze-out
• Strangeness Production in AA and pp Collisions
• Strangeness Production and Color Deconfinement
• Density correlations under global and local charge conservation
• Relaxation times for disoriented isospin condensates in high energy heavy ion collisions
• Exact strangeness conservation in heavy ion collisions