Two scales in Bose-Einstein correlations

TL;DR

This paper proposes a two-radii model for Bose-Einstein correlations in high energy hadron collisions, accounting for small and large emission sources and their dependence on collision energy, multiplicity, and transverse momentum.

Contribution

It introduces a novel two-radii parametrization for Bose-Einstein correlations, emphasizing the role of small and large emission sources in high energy collisions.

Findings

Bose-Einstein correlations are described by two distinct source sizes.

The model predicts how source sizes vary with energy, multiplicity, and transverse momentum.

Implications for understanding particle emission mechanisms in high energy physics.

Abstract

We argue that the secondaries produced in high energy hadron collisions are emitted by small size sources distributed over a much larger area in impact parameter space occupied by the interaction amplitude. That is, Bose-Einstein correlation of two emitted identical particles should be described by a `two-radii' parametrization ansatz. We discuss the expected energy, charged multiplicity and transverse momentum of the pair (that is, $\sqrt{s},~N_{\rm ch}, k_t$) behaviour of both the small and large size components.