Jet Fragmentation Function Moments in Heavy Ion Collisions
arXiv:1209.6086 · doi:10.1140/epjc/s10052-013-2319-8
Abstract
The nature of a jet's fragmentation in heavy-ion collisions has the potential to cast light on the mechanism of jet quenching. However the presence of the huge underlying event complicates the reconstruction of the jet fragmentation function as a function of the momentum fraction z of hadrons in the jet. Here we propose the use of moments of the fragmentation function. These quantities appear to be as sensitive to quenching modifications as the fragmentation function directly in z. We show that they are amenable to background subtraction using the same jet-area based techniques proposed in the past for jet p_t's. Furthermore, complications due to correlations between background-fluctuation contributions to the jet's p_t and to its particle content are easily corrected for.
15 pages, 5 figures
References in corpus (12)
- FastJet user manual
- Pileup subtraction using jet areas
- Jet momentum dependence of jet quenching in PbPb collisions at sqrt(sNN)=2.76 TeV
- Heavy ion event generator HYDJET++ (HYDrodynamics plus JETs)
- Q-PYTHIA: a medium-modified implementation of final state radiation
- A Monte Carlo Model for 'Jet Quenching'
- Measurement of the jet fragmentation function and transverse profile in proton-proton collisions at a center-of-mass energy of 7 TeV with the ATLAS detector
- Jet hadrochemistry as a characteristics of jet quenching
- Jet Reconstruction in Heavy Ion Collisions
- Fluctuations and asymmetric jet events in PbPb collisions at the LHC
- Medium-induced color flow softens hadronization
- (medium-modified) Fragmentation Functions
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- Jet fragmentation functions in proton-proton collisions using soft-collinear effective theory
- DAB-MOD sensitivity study of heavy flavor and azimuthal anisotropies based on beam energy, initial conditions, hadronization, and suppression mechanisms
- Pileup mitigation at the LHC: a theorist's view
- On jet structure in heavy ion collisions
- On the use of charged-track information to subtract neutral pileup