Universal Strangeness Production in Hadronic and Nuclear Collisions

TL;DR

This paper demonstrates that strangeness suppression in various hadronic and nuclear collisions is universally governed by the initial energy density, providing a unified description that aligns well with experimental data across multiple collision systems and energies.

Contribution

It introduces a universal function relating strangeness suppression to initial energy density, unifying diverse collision data under a common framework.

Findings

Strangeness suppression factor $oldsymbol{\gamma_s(s)}$ is a universal function of initial energy density.

The model agrees with experimental data from multiple collision systems and energies.

The pattern holds across different centralities and collision types.

Abstract

We show that strangeness suppression in hadronic and nuclear collisions is fully determined by the initial energy density of the collision. The suppression factor $\gamma_s(s)$, with $\sqrt s$ denoting the collision energy, can be expressed as a universal function of the initial energy density $\epsilon_0(s)$, and the resulting pattern is in excellent agreement with data from $p-p,~p-Pb,~Cu-Cu,~Au-Au$ and $Pb-Pb$ data over a wide range of energies and for different centralities.