Recent high-pt results from STAR

Abstract

We present selected recent results of multi-hadron correlation measurements in azimuth and pseudorapidity at intermediate and high \pt{} in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV, from the STAR experiment at RHIC. At intermediate \pt, measurements are presented that attempt to determine the origin of the associated near-side (small \dphi) yield at large pseudo-rapidity difference \deta{} that is found to be present in heavy ion collisions. In addition, results are reported on new multi-hadron correlation measures at high-\pt{} that use di-hadron triggers and multi-hadron cluster triggers with the goal to constrain the underlying jet kinematics better than in the existing measurements of inclusive spectra and di-hadron correlations.

6 pages, 8 figures. Prepared for 3rd International Conference on Hard and Electro- Magnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2008), submitted to EPJ C

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• The Wigner Function of Produced Particles in String Fragmentation
• Bose-Einstein Interference in the Passage of a Jet in a Dense Medium
• Jet Propagation and Mach-Cone Formation in (3+1)-dimensional Ideal Hydrodynamics
• Feynman Amplitude Approach to study the Passage of a Jet in a Medium
• Jets propagation through a hadron-string medium
• Novel Bose-Einstein Interference in the Passage of a Fast Particle in a Dense Medium
• Analysis of the near-side ridge structure in pp collisions via Momentum-Kick Model
• A Four Component Picture for Jet Induced Correlations in Heavy Ion Collisions?