Temperature measurement of Quark-Gluon plasma at different stages.

ABSTRACT: In a Quark-Gluon Plasma (QGP), the fundamental building blocks of matter, quarks and gluons, are under extreme conditions of temperature and density. A QGP could exist in the early stages of the Universe, and in various objects and events in the cosmos. The thermodynamic and hydrodynamic properties of the QGP are described by Quantum Chromodynamics (QCD) and can be studied in heavy-ion collisions. Despite being a key thermodynamic parameter, the QGP temperature is still poorly known. Thermal lepton pairs (e⁺e^- and μ⁺μ^-) are ideal penetrating probes of the true temperature of the emitting source, since their invariant-mass spectra suffer neither from strong final-state interactions nor from blue-shift effects due to rapid expansion. Here we measur

SUBMITTER: STAR Collaboration 

PROVIDER: S-EPMC12521530 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature