Dresden 2013 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 16: Schwerionenkollisionen und QCD Phasen
HK 16.3: Talk
Monday, March 4, 2013, 17:30–17:45, HSZ-201
Momentum asymmetry of reconstructed jets in ultra-relativistic heavy-ion collisions — •Florian Senzel1, Jan Uphoff1, Oliver Fochler1, Zhe Xu2, and Carsten Greiner1 — 1Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany — 2Department of Physics, Tsinghua University, Beijing, China
Recent experimental data measured in √s=2.76 ATeV Pb+Pb
collisions by ATLAS and CMS showed a significant imbalance in the
transverse momenta of the two reconstructed jets with the highest
transverse momenta. This momentum imbalance is assumed to be caused by
the different energy and momentum loss of the di-jets by scatterings
within the created medium. To investigate this momentum loss we
extended the transport model BAMPS which solves the full 3+1D
Boltzmann equation for partons based on pQCD cross sections. One
feature of BAMPS is the stochastic modeling of 2→2 as well as
2↔3 scattering processes. We will show our results for
the momentum asymmetry AJ and have a closer look at the role of
further recoil scattering processes of the initial shower partons on
the momentum loss of the reconstructed jets. For this investigation it is crucial
to carefully consider the subtraction of the soft underlying
background medium. Therefore we use a subtraction method which is
orientated on the established experimental methods.
Supported by the Hessian LOEWE initiative through the Helmholtz
International Center for FAIR (HIC for FAIR) and HGS-HIRe.