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arXiv · 2510.01822

Particle momentum spectra, correlations, and maximum entropy principle in high-multiplicity collision events

S. V. Akkelin
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Abstract

In this paper, we utilize the maximum entropy prescription to determine a quantum state of a small collision system at the kinetic freeze-out. We derive expressions for multiplicity-selected particle momentum spectra and correlation functions by applying a fixed particle number constraint to this state. The results of our analysis can be useful for interpreting the multiplicity dependence of the particle momentum spectra and correlations in high-multiplicity $pp$ collision events at a fixed LHC energy.

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S. V. Akkelin. 2025-10-02. Particle momentum spectra, correlations, and maximum entropy principle in high-multiplicity collision events. https://doi.org/10.1103/k7mv-57bt

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