Measuring initial temperature through a photon to dilepton ratio in heavy-ion collisions

2008/06/30 by Jajati K. Nayak, Jan-e Alam, Jan‐e Alam +3 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1088/0954-3899/35/10/104161

published as J.Phys.G35:104161,2008 · Figs replaced

arxiv created 2008/07/02 · openalex publication_date 2008/09/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Theoretical calculation of transverse momentum(p_T) distribution of thermal photons and dileptons originating from ultra-relativistic heavy ion collisions suffer from several uncertainties since the evaluation of these spectra needs various inputs which are not yet known unambiguously. In the present work the ratio of the p_T spectra of thermal photons to lepton pairs has been evaluated and it is shown that the ratio is insensitive to some of these parameters.

Citations

• QCD equation of state with2+1flavors of improved staggered quarks

Cited by

• Centrality dependence of kinetic freeze-out temperature and transverse flow velocity in high energy nuclear collisions
• A perturbative framework for jet quenching