Speaker
Thomas Balestri
(Stony Brook University - ATLAS)
Description
Lead-lead collisions at the LHC have are capable of producing a system of deconfined quarks and gluons at unprecedented energy density and temperature. Partonic-level interactions and energy-loss mechanisms in the medium can be studied with the aid electroweak bosons which carry an important information about the properties of the medium. Electroweak bosons form a class of unique high-pT probes because they or their decay products do not interact with the strongly-coupled medium, providing a benchmark for a variety of other phenomena measured with strongly interacting particles.
The ATLAS experiment measures isolated high-pT photons, W and Z bosons via different decay channels. New analysis of experimental data obtained at the LHC with lead-lead beams at sqrt(s_NN) = 2.76 TeV. This talk will present a comprehensive study of the scaling properties of electroweak bosons showing linear proportionality of production rates to the nuclear thickness function; rapidity distributions W-decays directly sensitivity to nuclear parton distribution functions; latest results on the photon- and Z-boson correlations with jets.
Primary authors
Dr
Pamela Ferrari
(CERN)
Thomas Balestri
(Stony Brook University - ATLAS)
