Heavy Flavor Tagged Jet RHIC Anne Sickles May 20, 2009 2 Anne Sickles May 20, 2009 Heavy Ion Collision illustration: S. Bass incoming nuclei hot matter hadronic gas RHIC: ion-ion collisions at up to s NN =200GeV also p+p collsions, crucial baseline 3 Anne Sickles May 20, 2009 Au+Au collision 4 Anne Sickles May 20, 2009 hot nuclear matter consistent with initial T ~ MeV arXiv: excess: 2212318MeV Direct central Au+Au: large excess over binary scaled p+p p+p central Au+Au arXiv: 5 Anne Sickles May 20, 2009 high p T particle production Parton Distribution Functions: Measured in Deep Inelastic Scattering Hard Scattering Cross Section: Calculated with pQCD Fragmentation into Hadrons: Measured in e+e- Collisions jet p+p collisions 6 Anne Sickles May 20, 2009 high p T particle production Parton Distribution Functions: Measured in Deep Inelastic Scattering Hard Scattering Cross Section: Calculated with pQCD Parton-Medium Interactions & Hadron Formation jet Au+Au collisions 7 Anne Sickles May 20, 2009 : control measurement R AA = 1 no nuclear effects : no color charge insensitive to produced matter R AA (p T