Light-Flavour Resonance Production in High-Energy Heavy-Ion Collisions: An Experimental Review

Read full text
Authors: P. Das, Ajay Kumar Dash, S. Dudi, S. Kundu, Dukhishyam Mallick, Bedangadas Mohanty, Md. Nasim, Kishora Nayak, A. K. Sahoo, Subhash Singha, Ranbir Singh
Cited by: 0

Abstract

Resonances provide sensitivity to the late-stage dynamics of heavy-ion collisions, as their lifetimes are comparable to the duration of the hadronic phase. This review summarizes state-of-the-art measurements of light-flavour mesonic and baryonic resonances, including $ρ$(770), $K^{\star}$(892), $ϕ$(1020), $Δ$(1232), $Λ^{\star}$(1520), $Σ^{\star}$(1385) and $Ξ^\star$(1530), in pp, p-A and A-A collisions at SPS, RHIC and the LHC. Systematic trends in yields, mass and width modifications, transverse-momentum spectra, nuclear modification factors, and particle ratios reveal the interplay of re-scattering and regeneration, medium-induced suppression, and the development of collective dynamics with increasing system size and multiplicity. Anisotropic flow results confirm the coupling of resonances to the expanding medium, while recent vector-meson spin-alignment measurements offer fresh insights into hadronization mechanisms and local fields. Ultra-peripheral collisions provide vacuum-like baselines for isolating in-medium effects. Emerging opportunities for charm-resonance studies in upcoming high-luminosity experiments are also outlined.Together, these advances demonstrate the important role of resonance measurements in constraining the space-time evolution of strongly interacting matter.

Fields of Study & Subjects

High-Energy Particle Collisions Research Dust and Plasma Wave Phenomena Nuclear physics research studies

Publication details

Journal / source
arXiv (Cornell University)
Publication date
7 January 2026
Language
EN
Document type
Preprint