Measurements of the suppression and correlations of dijets in Xe+Xe collisions at sNN=5.44 TeV
Volume
108
Pagination
024906 - ?
Publisher
DOI
10.1103/physrevc.108.024906
Journal
Physical Review C
Issue
ISSN
2469-9985
Metadata
Show full item recordAbstract
Measurements of the suppression and correlations of dijets is performed using
3
µ
b
−
1
of Xe+Xe data at
√
s
N
N
=
5.44
TeV collected with the ATLAS detector at the CERN Large Hadron Collider. Dijets with jets reconstructed using the
R
=
0.4
anti-
k
t
algorithm are measured differentially in jet
p
T
over the range of 32 to 398 GeV and the centrality of the collisions. Significant dijet momentum imbalance is found in the most central Xe+Xe collisions, which decreases in more peripheral collisions. Results from the measurement of per-pair normalized and absolutely normalized dijet
p
T
balance are compared with previous
Pb
+
Pb
measurements at
√
s
N
N
=
5.02
TeV. The differences between the dijet suppression in Xe+Xe and
Pb
+
Pb
are further quantified by the ratio of pair nuclear-modification factors. The results are found to be consistent with those measured in
Pb
+
Pb
data when compared in classes of the same event activity and when taking into account the difference between the center-of-mass energies of the initial parton scattering process in Xe+Xe and
Pb
+
Pb
collisions. These results should provide input for a better understanding of the role of energy density, system size, path length, and fluctuations in the parton energy loss.
Authors
Aad, G; Abbott, B; Abeling, K; Abidi, SH; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Hoffman, ACA; Acharya, BSCollections
- Particle Physics [965]
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