Heavy-Quark Diffusion in the Primordial Quark-Gluon Liquid Vector Mesons in Medium and Dileptons in Heavy-Ion Collisions Ralf Rapp Cyclotron Institute + Physics Department Texas A&M University College Station, USA Strong Interaction Seminar TU München, 26.10.09
25
Embed
Vector Mesons in Medium and Dileptons in Heavy-Ion Collisions
Heavy-Quark Diffusion in the Primordial Quark-Gluon Liquid. Vector Mesons in Medium and Dileptons in Heavy-Ion Collisions. Ralf Rapp Cyclotron Institute + Physics Department Texas A&M University College Station, USA Strong Interaction Seminar TU M ünchen , 26.10.09. - PowerPoint PPT Presentation
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Heavy-Quark Diffusion
in the Primordial Quark-Gluon Liquid
Vector Mesons in Medium
and Dileptons in Heavy-Ion Collisions
Ralf Rapp Cyclotron Institute + Physics Department
Texas A&M University College Station, USA
Strong Interaction SeminarTU München, 26.10.09
1.) Intro-I: Probing Strongly Interacting Matter
• Electromagnetic Probes: penetrating: EM >> Rnuc
• Equilibrium: EM spectral function Im EM(q0,q;B,T)
Information via EM Spectral Function: • degrees of freedom (parton vs. hadron)• transport properties (EM conductivity, susceptibility)• relation to order parameters (chiral symmetry)• measure of temperature
1.2) Intro-IIa: Low-Mass Dileptons at CERN-SPS
CERES/NA45 [2000]
mee [GeV]
• strong excess around M ≈ 0.5GeV (and M > 1GeV ) • little excess in region
NA60 [2005]
1.2) Intro-IIb: Low-Mass Dileptons SIS + RHIC
HADES [2008]
• awaiting larger system sizes …
PHENIX [2008]
mee [GeV]
• very large low-mass excess• awaiting HBD results (run-10) …
1.) Introduction
2.) Chiral Symmetry + Vector Mesons EM Emission and Vector Mesons Chiral Symmetry Breaking and a1 Meson in Medium
3.) Dilepton Spectra in A-A and -A Thermal Emission and NA60 (SPS) Photoproduction and CLAS (JLab)