Jet shapes and fragmentation functions in Au+Au collisions at sqrt(sNN) = 200 GeV in STAR

Abstract

The STAR Collaboration reports measurements of differential jet shapes and semi-inclusive jet fragmentation functions in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=$ 200 GeV with the STAR detector at RHIC. Jet shapes, which represent the radial distribution of momentum carried by constituents, are measured differentially for (1) the charged particles transverse momentum and (2) the jet azimuthal angle relative to the second-order event plane. Based on the semi-inclusive population of jets recoiling from a high transverse momentum trigger hadron, jet fragmentation functions in 40-60% central heavy-ion collisions are measured, and compared to those in PYTHIA simulations for pp collisions.

arXiv comment4 pages, 4 figures, Proceedings of 28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)

References in corpus (8)

• FastJet user manual
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Cited by in corpus (3)

• Disentangling Jet Modification in Jet Simulations and in Z+Jet Data
• Multiplicity dependence of charged-particle intra-jet properties in pp collisions at $\sqrt{s}$ = 13 TeV
• Exploring system size dependence of jet modification in heavy-ion collisions