30248 QM2011 false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] IN2P3 (FR) and CERN yves.roland.schutz@cern.ch 16822 yves.schutz@cern.ch quark-matter, heavy-ion, ultrarelativistic energies, LHC, CERN, ALICE, CMS, ATLAS, RHIC, BNL, PHENIX, STAR <p>Quark Matter Conference in 2011 at Annecy (<a href="http://qm2011.in2p3.fr"> back to QM2011 home page</a> )</p> False Centre Bonlieu

France

Théâtre National 2011-05-22T08:30:00 2011-05-28T13:00:00 2008-03-04T17:38:10 2012-03-01T14:02:44 Europe/Zurich IN2P3/CERN yves.schutz@cern.ch CERN urs.wiedemann@cern.ch Yves Schutz & Urs Wiedemann 256 false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] Jets 1 Parallel University of Illinois at Chicago kkauder@gmail.com University of Illinois at Chicago kkauder@gmail.com Imperial Palace

None

Salon Verdi AB 2011-05-27T16:00:00 2011-05-27T16:20:00 00:20 Hard scatterings of partons provide a valuable colored probe of the strongly-coupled medium created in ultra-relativistic heavy ion collisions. These hard scatterings can be studied by means of angular correlations of charged hadrons with respect to a high transverse momentum trigger particle. Several recent two-particle correlation studies indicate that A+A collision dynamics evolve significantly with collision centrality. They specifically reveal the presence of unexpected strong away-side deformation and the development of a long-range "ridge" in correlation measured as a function of $\Delta\eta$ vs $\Delta\phi$. The detailed physics mechanisms responsible for these features however remain under active investigation. We will present preliminary results of a new di-hadron correlation analysis, measured as a function of $\Delta \phi$ vs $\Delta \eta$, for identified high-pT triggers from the high-statistics 200 GeV Au+Au data sample collected by the STAR experiment at RHIC during Run-10. The relativistic rise of the ionization energy loss dependence of particles measured in the STAR TPC is used to obtain a statistical separation of charged pions, kaons, and protons. The $\Delta \phi$ vs $\Delta \eta$ correlations measured in this work extend earlier measurements of azimuthal correlations (in $\Delta \phi$ only) with identified hadron triggers, which, admittedly with large uncertainties, reported no significant dependence on a leading hadron identity. The added $\Delta \eta$ dimension and improved statistics reveal a rich set of new features: the near-side ($ |\Delta \phi|<1$) associated hadron distributions with respect to high-pT pion, kaon and proton triggers exhibit distinctly different features for both "ridge" (large $\Delta \eta$ and small $\Delta \phi$) and "jet-like" ($ |\Delta \phi|<0.7$ excluding the ridge) particles. We will discuss the implications of these results in the context of the existing models and possible connection of the leading hadron ID with the color-charge and/or flavor of a hard-scattered parton. slides doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link paper doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 2013-05-25 2013-05-26