Abstract
Jet quenching effects have been widely used to study the properties of strongly-interacting matter, quark-gluon plasma, in heavy-ion collisions. Flavor tagging in heavy-ion collisions plays an important role to reveal the medium parton showers for quark and gluon evolution. Combining with kinematic information, the average jet charge can be used to separate the contribution of different jet flavors, which is defined as the momentum- weighted sum of the charges of hadrons inside a given jet. Using soft-collinear effective theory with medium interactions, we investigate the factorization of the jet charge in QCD medium. We provide predictions for jet charge distributions and their modifications compared to the ones in proton-proton collisions.
Highlights
The jet charge is defined as the transverse momentum-weighted sum of the charges of the hadrons in jet cone [1] Qκ,jet = i∈jet Qi piT pjTet κ (1)where pjTet and piT is the transverse momenta of the jet and hadron i
In proton-proton collisions, the works [2, 3] studied the jet charge distribution using soft-collinear effective theory, where this observable can be written as the product of perturbative calculable jet functions and the non-perturbative fragmentation functions
We present our recent work [5] about jet charge in heavy-ion collisions, where we introduce a framework for perturbative calculations of the average jet charge in analogy to the study [2, 3] in vacuum
Summary
The jet charge is defined as the transverse momentum-weighted sum of the charges of the hadrons in jet cone [1]. In proton-proton collisions, the works [2, 3] studied the jet charge distribution using soft-collinear effective theory, where this observable can be written as the product of perturbative calculable jet functions and the non-perturbative fragmentation functions. In heavy-ion collisions, jet charge is a promising observable, which can be used to study the initial-state and final-state effects. The evolution of energetic partons medium can be tested uniquely In these proceedings, we present our recent work [5] about jet charge in heavy-ion collisions, where we introduce a framework for perturbative calculations of the average jet charge in analogy to the study [2, 3] in vacuum. We will show that the initial state isospin effects and final state jet quenching effects can be disentangled utilizing jet charge distributions
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