Jorge Casalderrey-Solana
(U. de Barcelona)
29/05/2012, 14:15
Oral presentation
We study the time structure of vacuum jet evolution via a simple uncertainty principle estimate in the kinematic range explored by current heavy ion collisions at the LHC. We observe that a large fraction of the partonic splittings occur at large times, of the order of several fm. We compare the time distribution of vacuum splittings with the distribution of path lengths traversed by jets in a...
Mauricio Martinez Guerrero
(Universidade de Santiago de Compostela)
29/05/2012, 14:35
Oral presentation
Radiative interferences in the multi-parton shower is the building block of
QCD jet physics in vacuum. The presence of a hot medium made of quarks and
gluons is expected to alter this interference pattern. To study such effects, we derive the gluon emission spectrum off an "asymptotic quark" traversing a hot and dense QCD medium at first order in the medium density. The resulting induced...
Mindaugas Lekaveckas
(MIT)
29/05/2012, 14:55
Oral presentation
We calculate P(k_perp), the probability distribution for an energetic parton propagating for a distance L through a medium to pick up transverse momentum k_perp, for a medium consisting of weakly coupled quark-gluon plasma. We use full or HTL self-energies in appropriate regimes, resumming each in order to find the leading large-L behavior. We estimate the jet quenching parameter and compare...
Abhijit Majumder
(Wayne State University)
29/05/2012, 15:15
Oral presentation
We present a framework where first principles calculations of jet modication may be carried out in a non-perturbative thermal environment. As an example of this approach, we compute the leading order contribution to the transverse momentum broadening of a high energy (near on-shell) quark in a thermal medium. This involves a factorization of a non-perturbative operator product from the...
Jose Guilherme Milhano
(CENTRA-IST (Lisbon) and CERN-PH-TH)
29/05/2012, 15:35
Oral presentation
The observation of a significant enhancement of the dijet asymmetry in PbPb collisions as compared to the pp reference case, compounded with the absence of modication of the azimuthal dijet distribution, led us to highlight the importance of medium induced transverse transport of soft quanta as a source of jet energy loss.
Here, we extend our analysis and explore the consequences of 'jet...
