Jet and heavy flavor production in heavy-ion collisions

Open Heavy Flavor Production in Heavy Ion Collisions

The interaction of heavy partons, charm and beauty, with the matter created in heavy ion collisions has been of great interest in recent years. Heavy partons were predicted to interact less strongly with the matter than light partons. In apparent contrast to these predictions, unexpectedly strong suppression of non-photonic electrons from heavy flavor decays has been seen. However, significant ...

Open heavy flavor production from light ion collisions at RHIC

PHENIX measures leptons at mid and forward rapidities and extracts leptons resulting from semi-leptonic decays of heavy quarks. We present PHENIX results related to heavy quark production, specifically the invariant cross section of the non-photonic single electrons produced at midrapidity in p+p and d+Au collisions at √ sNN = 200 GeV . The measured cross section for p+p collisions is compared ...

Jet Tomography in Heavy Ion Collisions

Experiments at the Relativistic Heavy Ion Collider RHIC in Brookhaven show for the first time a significant quenching of high-p⊥ leading hadron spectra. In particular, transverse momentum spectra for neutral pion 1,2 and charged hadron 1,3 are suppressed if compared to spectra in p+p collisions rescaled by the number of binary collisions. This suppression is most pronounced (up to a factor ∼ 5)...

Jet reshaping in heavy-ion collisions

We propose a new implementation of medium effects in jet structures in which a modification of the splitting function is included at every step in the typical final state parton shower. Although the main application of this new formalism will be at the LHC, it is interesting that, in the presence of a trigger bias to small number of splittings, non-trivial angular dependences could appear with ...

Jet Quenching in Heavy Ion Collisions