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arXiv · 1310.6932

Causality Constraints on Hadron Production In High Energy Collisions

P. Castorina·H. Satz
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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.

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P. Castorina, H. Satz. 2013-10-25. Causality Constraints on Hadron Production In High Energy Collisions. https://doi.org/10.1142/s0218301314500190

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