Hard Probes 2012

Session

Parallel IC: Correlations

28 May 2012, 14:00

Cagliari - Italy

74. Measurement of charged hadron v_2 at high pT in PbPb collisions at sqrt(s)=2.76TeV with CMS

Victoria Zhukova (University of Kansas)

28/05/2012, 14:00

Oral presentation

Measurements of the azimuthal anisotropy of charged hadrons are presented for PbPb collisions at sqrt(s_NN) = 2.76 TeV over an extended transverse momentum range. The data were collected with the CMS detector at the LHC. The anisotropy parameter (v_2) is extracted up to a significantly higher pT region than previous achieved, by correlating charged tracks with respect to the event plane...

55. Two particle correlation measurements at PHENIX

Takahito Todoroki (Tsukuba)

28/05/2012, 14:20

Oral presentation

Measurements of two particle correlations are important tools to dissect the interplay of hard-scattered partons and the hot dense medium created by ultra-relativistic heavy ion collisions. One of important topic of correlation measurements in heavy ion collisions is to evaluate the path-length dependence of parton energy loss and to discern the medium response to it. Another topic is to...

71. Measurement of Fourier components of two-particle correlations in PbPb collisions at sqrt(s)=2.76TeV with CMS

Rylan Conway (University of California, Davis)

28/05/2012, 14:40

Oral presentation

Measurements from the CMS experiment at the LHC of dihadron correlations for charged particles produced in PbPb collisions at a nucleon-nucleon centre-of-mass energy of 2.76 TeV are presented. The results are reported as a function of the particle transverse momenta and collision centrality over a broad range in relative pseudorapidity (delta-eta) and the full range of relative azimuthal angle...

78. Production anisotropy of h±, π± and protons at high-pT in Pb-Pb collisions at √sNN=2.76 TeV

Jan Rak (Jyvaskyla Univesity, Finland)

28/05/2012, 15:00

Oral presentation

The ALICE collaboration has recently reported an observation of an enhanced intra-jet yield of charged particles associated with the high-pT trigger particle in central Pb-Pb collisions at √s_NN=2.76 TeV \cite{Aamodt:2011vg}. There are several possible explanations of the origin of this enhancement: (i) modifications of the fragmentation function, (ii) bias on the p_T distribution of the...

36. Measurement of the coefficients and correlations between higher-order flow harmonics with the ATLAS detector

Jia JIANGYONG (Stony Brook University and BNL)

28/05/2012, 15:20

Oral presentation

Recently, the study of harmonic flow coefficients v_n has been the focus of many experimental efforts in heavy-ion collisions at RHIC and the LHC. These coefficients are believed to be associated with the various shape components in the initial geometry, arising from fluctuations of the participating nucleons in the overlap region. The orientation of these harmonic flow (event plane or...

93. jet-like near-side peak shapes in Pb-Pb collisions at sqrt s_NN=2.76 TeV with ALICE

Andreas Morsch (CERN)

28/05/2012, 15:40

Oral presentation

In central heavy-ion collisions at the LHC hot and dense matter is formed in which outgoing partons suffer significant energy loss. The quenched energy seems to dominantly reappear at low and intermediate pT, a pT region where collective effects dominate and jet reconstruction is not feasible. To characterize in-medium energy loss in this pT region, we analyse two-particle angular correlations...