Measurement of the azimuthal anisotropy of charged-particle production in Xe plus Xe collisions at root S-NN=5.44 TeV with the ATLAS detector
Volume
101
Publisher
DOI
10.1103/PhysRevC.101.024906
Journal
PHYSICAL REVIEW C
Issue
ISSN
2469-9985
Metadata
Show full item recordAbstract
This paper describes the measurements of flow harmonics
v
2
–
v
6
in
3
μ
b
−
1
of
Xe
+
Xe
collisions at
√
s
N
N
=
5.44
TeV performed using the ATLAS detector at the Large Hadron Collider (LHC). Measurements of the centrality, multiplicity, and
p
T
dependence of the
v
n
obtained using two-particle correlations and the scalar product technique are presented. The measurements are also performed using a template-fit procedure, which was developed to remove nonflow correlations in small collision systems. This nonflow removal is shown to have a significant influence on the measured
v
n
at high
p
T
, especially in peripheral events. Comparisons of the measured
v
n
with measurements in
Pb
+
Pb
collisions and
p
+
Pb
collisions at
√
s
N
N
=
5.02
TeV are also presented. The
v
n
values in
Xe
+
Xe
collisions are observed to be larger than those in
Pb
+
Pb
collisions for
n
=
2
, 3, and 4 in the most central events. However, with decreasing centrality or increasing harmonic order
n
, the
v
n
values in
Xe
+
Xe
collisions become smaller than those in
Pb
+
Pb
collisions. The
v
n
in
Xe
+
Xe
and
Pb
+
Pb
collisions are also compared as a function of the mean number of participating nucleons,
⟨
N
part
⟩
, and the measured charged-particle multiplicity in the detector. The
v
3
values in
Xe
+
Xe
and
Pb
+
Pb
collisions are observed to be similar at the same
⟨
N
part
⟩
or multiplicity, but the other harmonics are significantly different. The ratios of the measured
v
n
in
Xe
+
Xe
and
Pb
+
Pb
collisions, as a function of centrality, are also compared to theoretical calculations.
Authors
Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, HCollections
- Particle Physics [1094]
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