Doctoral Dissertations

Date of Award

8-2022

Degree Type

Dissertation

Degree Name

Doctor of Philosophy

Major

Physics

Major Professor

Christine E. Nattrass

Committee Members

Christine Nattrass, Soren Sorensen, Kenneth Read, Guillermo I. Maldonado

Abstract

Hard partonic scatterings serve as an important probe of quark-gluon-plasma (QGP) properties. The properties of jets and their constituents can provide a tool for understanding the partonic energy loss mechanisms. Low momentum jets offer a unique window into partonic energy loss because they reconstruct the partons which have lost a significant amount of energy to the QGP medium. The main difficulty in studying low momentum jets in heavy ion collisions is the presence of a significant uncorrelated background of low momentum hadrons from soft processes. One way to deal with this background is to use jet- hadron correlations to fit and subtract the soft, flow-modulated background. This technique allows measurements of the near and away side yields. I present constituent yields for Pb–Pb collisions at √sNN = 5.02 TeV. These yields are a measurement of the raw fragmentation function. I also discuss prospects for unfolding the distributions of yields to get a corrected fragmentation function for low jet momenta.

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