QM 2011 - XXII International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

Session

Jets

Parallel Session 5-1

27 May 2011, 15:00

Théâtre National (Centre Bonlieu)

Conveners

Jets

• Nestor Armesto Perez (Universidade de Santiago de Compostela)

448. Jet reconstruction with particle flow in heavy-ion collisions with CMS

Matthew Nguyen (CERN)

27/05/2011, 15:00

Jets

Parallel

In the particle-flow approach one attempts to combine information from all available sub-detector systems to reconstruct all stable particles. Such an event reconstruction has been shown to improve the resolution of jets and missing transverse energy in pp collisions compared to purely calorimetric measurements. This is achieved primarily by combining the precise momentum determination of...

346. Jet quenching and elliptic flow in heavy ion collisions at RHIC and LHC within a pQCD-based partonic transport model

Oliver Fochler (Institut für Theoretische Physik, Goethe-Universität Frankfurt)

27/05/2011, 15:20

Jets

Parallel

We present fully dynamic simulations of heavy ion collisions at RHIC and at LHC energies within the perturbative QCD-based partonic transport model BAMPS (Boltzmann Approach to Multi-Parton Scatterings). We focus on the simultaneous investigation of high-pT observables, such as jet quenching, and bulk observables, such as the elliptic flow. The model features inelastic 2 <-> 3 processes based...

43. Higher harmonic jet tomography as a probe of fluctuating initial condition geometries in A+A

Barbara Betz (Columbia University)

27/05/2011, 15:40

Jets

Parallel

While 2nd Fourier harmonics of jet quenching have been thoroughly explored in the literature and shown to be sensitive to (1) the underlying jet path length dependence of energy loss and (2) the differences between the mean eccentricity predicted by Glauber and CGC/KLN models of initial conditions, the sensitivity of higher harmonics, v_n(p_T, b), to differences between the fluctuation...

256. Leading hadron PID effects in di-hadron angular correlations in STAR

Kolja Kauder (University of Illinois at Chicago)

27/05/2011, 16:00

Jets

Parallel

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...

563. Anomalous baryon production and its interplay with jet energy loss at RHIC and LHC energies

Peter Levai (KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary)

27/05/2011, 16:20

Jets

Parallel

The study of the nuclear suppression factor of charged hadrons and neutral pions in AuAu collisions at RHIC energies indicated the possible appearance of an anomaly at higher pT-s: although protons are expected to be produced from gluons, but jet energy loss is less effective for them comparing to pion suppression. Fragmentation function and jet energy loss based explanation can not reproduce...

173. Jets, mach cone, hot spots, ridges, harmonic flow, dihadron and $\gamma$-hadron correlations in high-energy heavy-ion collisions

Dr Guo-Liang Ma (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800, China)

27/05/2011, 16:40

Jets

Parallel

Within the AMPT Monte Carlo model, fluctuations in the initial transverse parton density are shown to lead to harmonic flows. The net back-to-back dihadron azimuthal correlation after subtraction of contributions from harmonic flows still has a double peak that is independent of the initial geometric triangularity and unique to the jet-induced Mach cone and expanding hot spots distorted by...