Work

Universality of scaling entropy in charged hadron multiplicity distributions at the LHC

Year: 2025

Type: article

Abstract: In this work, we investigate the scaling behavior of the entropy associated with the charged hadron multiplicity distribution P ( N ) in proton-proton collisions at the LHC. We show that the growth of this entropic indicator as a function of the Bjorken- x variable exhibits universal behavior, consistent with observations from deep inelastic scattering. This universality suggests that the entropy scaling is a property of the initial state and reflects the diffusive nature of gluon dynamics at small x . Furthermore, we demonstrate that high-multiplicity events are not accurately described by traditional Koba-Nielsen-Olesen scaling and require a more precise description based on a diffusion scaling framework. This new scaling emerges naturally from the universal growth of partonic entropy and offers deeper insight into the dynamics of particle production in high-energy hadronic collisions.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/lynp-yzk5

Authors: L. S. Moriggi, F. S. Navarra, M. V. T. Machado

Institutions: Universidade Estadual do Centro-Oeste, Universidade de São Paulo, Universidade Federal do Rio Grande do Sul

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico

Award: G206555262