Jet shape and redistribution of the lost energy from jets in Pb+Pb collisions at the LHC in a multiphase transport model

Abstract

Jet-medium interaction involves two important effects: jet energy loss and medium response. The search for jet-induced medium excitations is one of the hot topics in jet quenching study in relativistic nuclear collisions. In this work, we perform a systematic study on how the lost energy from hard jets evolves with the bulk medium and redistributes in the final state of heavy-ion collisions via a multi-phase transport model. In particular, the ($\Delta \eta ,\Delta \varphi$) distribution of charged particles with respect to the jet axis and jet shape function are studied for various Pb+Pb collision centralities and for different transverse momentum intervals of charged particles. Our numerical result shows a strong enhancement of soft particles at large angles for Pb+Pb collisions relative to p+p collisions at the LHC, qualitatively consistent with recent CMS data. This indicates that a significant fraction of the lost energy from hard jets is carried by soft particles at large angles away from the jet axis.

10 pages, 9 figures

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Cited by in corpus (6)

• Medium Response and Jet-Hadron Correlations in Relativistic Heavy-Ion Collisions
• Hard jet substructure in a multistage approach
• Search for jet quenching effects on the plain jet mass in Pb+Pb collisions at the LHC with a multiphase transport model
• Understanding the medium-like effects in the jet-like yield in pp and p-Pb collisions using event generators
• A modular perspective to the jet suppression from a small to large radius in very high transverse momentum jets
• Hadronization effects on transverse momentum dependent jet fragmentation function in small systems