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Article overview
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Measurement of in-medium jet modification using direct photon+jet and $pi^{0}$+jet correlations in $p+p$ and central Au+Au collisions at $sqrt{s_{
m NN}} = 200$ GeV | | STAR Collaboration
; | | Date: |
1 Sep 2023 | | Abstract: | The STAR Collaboration presents measurements of the semi-inclusive
distribution of charged-particle jets recoiling from energetic direct-photon
$gamma_{
m dir}$ and neutral-pion ($pi^{0}$) triggers in $p+p$ and central
Au+Au collisions at $sqrt{s_{
m NN}} = 200$ GeV over a broad kinematic range,
for jet resolution parameters $R=0.2$ and 0.5. Medium-induced jet yield
suppression is observed to be larger for $R=0.2$ than for 0.5, reflecting the
angular range of jet energy redistribution due to quenching. The magnitude of
suppression is similar for $gamma_{
m dir}$- and $pi^{0}$-triggered data,
which constrains the color-charge and path-length dependence of jet quenching.
Theoretical model calculations incorporating jet quenching do not fully
describe the measurements. | | Source: | arXiv, 2309.00156 | | Services: | Forum | Review | PDF | Favorites | |
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