September 30, 2018 to October 5, 2018
Aix-Les-Bains, Savoie, France
Europe/Zurich timezone

Quark and Gluon jet Energy Loss

Oct 4, 2018, 10:45 AM
Aix-Les-Bains, Savoie, France

Aix-Les-Bains, Savoie, France

Aix-Les-Bains, Congress Center Student Lectures Day: September 30 at CERN
2a) Jets and high-pT hadrons (TALK) Parallel 2


Joao Barata (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)


Although quark/gluon single parton energy loss is theoretically well established and under control by the corresponding Casimir color factor (CF/CA), quark/gluon initiated jets will wash out the corresponding color factor ratio due to the parton shower evolution. As such, for phenomenological studies in heavy-ions, it is not only mandatory to take into account the corresponding deviation from the expected vacuum probabilistic shower, but also from the enhanced splitting rate due to the interactions with the medium. In this work, we use a calibrated energy loss channel (photon-jet events) to study, at Monte Carlo level, the expected energy loss dependence on light-quark/gluon initiated jets. Our results show that it is not possible to use such simple ansatz to quantify the sensitivity of observables to the role of the color charge as previously assumed.Further we provide robust parametrizations for both average energy loss and its variance for quark and gluon initiated jets.

Primary authors

Guilherme Milhano (LIP-Lisbon & CERN TH) Liliana Apolinario (LIP (PT)) Joao Barata (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)

Presentation materials