# Measurement of fully-reconstructed inclusive jet production in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV by the STAR experiment

- Institution: CERN
- Department: Conferences
- Speaker: Robert Líčeník
- Year: 2020
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3000378)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The STAR Collaboration at RHIC reports the measurements of both charged and fully-reconstructed inclusive jet production in central (0-10\%) and peripheral (60-80\%) Au+Au collisions at $\sqrt{s_{\scriptsize{\textrm{NN}}}}$ = 200 GeV. The charged jet analysis utilizes a dataset corresponding to 70 $\mu\mathrm{b}^{-1}$ recorded in 2011, while the new fully-reconstructed jet analysis utilizes a dataset corresponding to 184 $\mu\mathrm{b}^{-1}$ recorded in 2014. Both datasets were recorded using a Minimum Bias trigger. Jets are reconstructed using charged-particle tracks in the Time Projection Chamber and neutral energy measured by the Barrel Electromagnetic Calorimeter with $p_{\scriptsize{\textrm{T}}}$($E_{\scriptsize{\textrm{T}}})>$ 0.2 GeV/$c$ (GeV). Jet reconstruction is carried out using the anti-$k_{\scriptsize{\textrm{T}}}$ algorithm with resolution parameter $R$ = 0.2, 0.3 and 0.4. The large background yield to the jet signal in heavy ion collisions is suppressed by requiring high-$p_{\scriptsize{\textrm{T}}}$ leading charged or neutral radiation in accepted jet candidates. The bias imposed by this requirement is assessed, and the $p_{\scriptsize{\textrm{T}}}$-region in which this bias is negligible is identified. Charged jet and fully-reconstructed jet inclusive distributions are reported in central and peripheral Au+Au collisions for $p_{\scriptsize{\textrm{T}}}^{jet}>$10 GeV/$c$. Yield suppression, corresponding to medium-induced parton energy loss, is observed for central Au+Au collisions relative to both peripheral Au+Au collisions and vacuum reference. Medium-induced jet broadening is measured using the $R$-dependence of yields. The results are compared to jet measurements at the LHC and theoretical calculations..

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## Lectures

1. [Measurement of fully-reconstructed inclusive jet production in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV by the STAR experiment](https://invisiblenetwork.ai/learn/cern/3000378/46b11bd747f2), 19 min (CERN's player)