Resonance Production in Heavy-Ion Collisions

TL;DR

This paper reviews how hadronic resonances serve as probes to study various properties and phenomena in heavy-ion collisions, including spectral modifications, energy loss, and collective effects, based on experimental results from RHIC, LHC, and other facilities.

Contribution

It provides a comprehensive overview of resonance measurements across different collision systems and compares experimental findings with theoretical models, highlighting recent progress and open questions.

Findings

Resonance spectral shapes show modifications in heavy-ion collisions.

Evidence of collective effects observed in small systems like p+A.

Resonance measurements help understand the properties of the hadronic phase.

Abstract

Hadronic resonances are unique probes that allow the properties of heavy-ion collisions to be studied. Topics that can be studied include modification of spectral shapes, in-medium energy loss of parsons, vector-meson spin alignment, hydrodynamic flow, recombination, strangeness production, and the properties of the hadronic phase. Measurements of resonances in p+p, p+A, and d+A collisions serve as baselines for heavy-ion studies and also permit searches for possible collective effects in these smaller systems. These proceedings present a selection of results related to these topics from experiments at RHIC, LHC, and other facilities, as well as comparisons to theoretical models.