SQM2026

Unlocking the Thermal Secrets of High-Energy Collisions with Non-Extensive Thermodynamics

24 Mar 2026, 19:17

1m

Poster Presentation Poster Session

Speaker

Gergely Barnafoldi (Hungarian Academy of Sciences (HU))

Description

I present a comprehensive investigation of hadron production dynamics in high-energy collisions, ranging from proton-proton to lead-lead, utilizing a non-extensive statistical framework and data from the ALICE experiment at the LHC. Analyzing identified hadron spectra – including light and charmed species – we demonstrate the power of the Tsallis thermometer to map out the thermal characteristics of collision systems [1,2]. Our findings reveal a striking connection between hadron mass and effective temperature, hinting at a common timescale for spectrum formation. Furthermore, we observe a distinct sensitivity of non-extensivity to event shape and constrain the heat capacity of the evolving hot system [3]. This work highlights the ability of non-extensive thermodynamics to connect soft and hard processes, providing new insights into the thermal properties and complex dynamics of high-energy collisions.

Refs:
[1] L. Gyulai, G. Bíró, R. Vértesi, G.G. Barnaföldi: Int.J.Mod.Phys.A 40 (2025) 09, 2444010
[2] L. Gyulai, G. Bíró, R. Vértesi, G.G. Barnaföldi: J. Phys. G: Nucl. Part. Phys. 51 085103 (2024)
[3] L. Gyulai, G. Bíró, R. Vértesi, G.G. Barnaföldi: Effect of event classification on the Tsallis-thermometer (in preparation)