Jet-like correlations of heavy-flavor particles - from RHIC to LHC

Abstract

Measurements at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory have revealed strong modification of the jet structure in high-energy heavy-ion collisions, which can be attributed to the interaction of hard scattered partons with the hot and dense QCD matter. The study of heavy-quark (charm and bottom) production in such collisions provides key tests of parton energy-loss models and, thus, yields profound insight into the properties of the produced matter. The high-pT yield of heavy-flavor decay electrons exhibits an unexpected large suppression. Since those single electrons have contributions from charm and bottom decays an experimental method is needed to investigate them separately. Heavy-flavor particle correlations provide information about the underlying production mechanism. In this contribution, a review on recent measurements on azimuthal correlations of single electrons and open charmed mesons at RHIC and perspectives of such measurements at the CERN-Large Hadron Collider (LHC) are presented. Moreover, it has been shown that next-to-leading-order (NLO) QCD processes, such as gluon splitting, become important at LHC energies. It will be demonstrated how this contribution can be determined through the measurement of the charm content in jets.

8 pages, 6 figures, Proceedings of the 27th Winter Workshop on Nuclear Dynamics, Winter Park, Colorado, USA. To be published in Journal of Physics: Conference Series (JPCS)

References in corpus (8)

• Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Results from the Relativistic Heavy Ion Collider
• Competition of Heavy Quark Radiative and Collisional Energy Loss in Deconfined Matter
• Heavy flavor in heavy-ion collisions at RHIC and RHIC II
• Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+p Collisions at sqrt(s)=200 GeV
• Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s}$=200 GeV
• Heavy quark production at RHIC and LHC within a partonic transport model
• A new correlation method to identify and separate charm and bottom production processes at RHIC