Yue Shi Lai
(Massachusetts Inst. of Technology (US))
14/08/2012, 14:15
Jets
Oral Presentation
The first measurement of the transverse momentum (pT) imbalance of isolated-photon+jet pairs in relativistic heavy ion collisions is reported. The analysis uses data from PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair and corresponding to an integrated luminosity of 150/ub recorded by the CMS experiment at the LHC in 2011. For events containing an isolated photon with...
Zvi Citron
(Weizmann Institute of Science (IL))
14/08/2012, 14:35
Oral Presentation
The correlations of jets with neutral bosons is a particularly powerful tool to probe the underlying physics of jet quenching. To gain insight into the physics of this process we can study Z-jet and gamma-jet correlations. Because the Z and photons do not directly couple to the strong force, in a jet+boson event the unmodified bosons allow us to access the modification of the opposite side...
Justin Edward Frantz
(Ohio University (US))
14/08/2012, 14:55
Oral Presentation
A variety of heavy-ion data from RHIC and recently also from the LHC on hard direct photon production testifies that this "white" probe of the densely colored QGP continues to lend new insights to understanding jet suppression and energy loss. It also allows first comparisons between RHIC and LHC energies for the behavior of energy loss, for example whether jet fragmentation function is...
Nicolas Arbor
(Centre National de la Recherche Scientifique (FR))
14/08/2012, 15:15
Oral Presentation
Gamma-hadron correlations measured in heavy-ion collisions produced at the LHC allow to investigate medium induced jet modifications in a transverse momentum (p_t) range below 50 GeV/c, where jet reconstruction is challenging because of the relatively large contribution from the underlying event. At high p_t direct photons, produced in Compton and annihilation QCD leading order processes, are...
Dr
Ivan Vitev
(LANL)
14/08/2012, 15:35
Jets
Oral Presentation
Tagged jet measurements provide a promising experimental channel to quantify the similarities and differences in the mechanisms of jet production in proton-proton and nucleus-nucleus collisions. We present the first calculation of the transverse momentum asymmetry of $Z^0/\gamma^*$-tagged jet events in $\sqrt{s}=2.76$~TeV reactions at the LHC. Our results combine the ${\cal O}(G_F\alpha_s^2)$...
