Abstract

The Chiral Magnetic Wave (CMW) phenomenon is essential to provide insights into the strong interaction in QCD, the properties of the quark-gluon plasma, and the topological characteristics of the early universe, offering a deeper understanding of fundamental physics in high-energy collisions. Measurements of the charge-dependent anisotropic flow coefficients are studied in Pb-Pb collisions at center-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV to probe the CMW. In particular, the slope of the normalized difference in elliptic ($v_{2}$) and triangular ($v_{3}$) flow coefficients of positively and negatively charged particles as a function of their event-wise normalized number difference, is reported for inclusive and identified particles. The slope $r_{3}^{\rm Norm}$ is found to be larger than zero and to have a magnitude similar to $r_{2}^{\rm Norm}$, thus pointing to a large background contribution for these measurements. Furthermore, $r_{2}^{\rm Norm}$ can be described by a blast wave model calculation that incorporates local charge conservation. In addition, using the event shape engineering technique yields a fraction of CMW ($f_{\rm CMW}$) contribution to this measurement which is compatible with zero. This measurement provides the very first upper limit for $f_{\rm CMW}$, and in the 10-60% centrality interval it is found to be 26% (38%) at 95% (99.7%) confidence level.

Table 1

Data from Figure 4 (left panel).

10.17182/hepdata.145839.v1/t1

Normalized $\Delta\it{v}_{2}$ slope of charged hadrons as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 2

Data from Figure 4 (left panel).

10.17182/hepdata.145839.v1/t2

Normalized $\Delta\it{v}_{2}$ slope of kaons as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 3

Data from Figure 4 (left panel).

10.17182/hepdata.145839.v1/t3

Normalized $\Delta\it{v}_{2}$ slope of pions as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 4

Data from Figure 4 (left panel).

10.17182/hepdata.145839.v1/t4

Normalized $\Delta\it{v}_{2}$ slope of protons as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 5

Data from Figure 4 (right panel).

10.17182/hepdata.145839.v1/t5

Normalized $\Delta\it{v}_{3}$ slope of charged hadrons as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 6

Data from Figure 4 (right panel).

10.17182/hepdata.145839.v1/t6

Normalized $\Delta\it{v}_{3}$ slope of kaons as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 7

Data from Figure 4 (right panel).

10.17182/hepdata.145839.v1/t7

Normalized $\Delta\it{v}_{3}$ slope of pions as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 8

Data from Figure 4 (right panel).

10.17182/hepdata.145839.v1/t8

Normalized $\Delta\it{v}_{3}$ slope of protons as a function of centrality in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 9

Data from Figure 5 (top left panel).

10.17182/hepdata.145839.v1/t9

Delta Integral Covariance as function of $v_2$ in 0-10% Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 10

Data from Figure 5 (top middle panel).

10.17182/hepdata.145839.v1/t10

Delta Integral Covariance as function of $v_2$ in 10-20% Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 11

Data from Figure 5 (top right panel).

10.17182/hepdata.145839.v1/t11

Delta Integral Covariance as function of $v_2$ in 20-30% Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 12

Data from Figure 5 (bottom left panel).

10.17182/hepdata.145839.v1/t12

Delta Integral Covariance as function of $v_2$ in 30-40% Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 13

Data from Figure 5 (bottom middle panel).

10.17182/hepdata.145839.v1/t13

Delta Integral Covariance as function of $v_2$ in 40-50% Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 14

Data from Figure 5 (bottom right panel).

10.17182/hepdata.145839.v1/t14

Delta Integral Covariance as function of $v_2$ in 50-60% Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.
Table 15

Data from Figure 6.

10.17182/hepdata.145839.v1/t15

$f_{CMW}$ as function of CENTRALITY in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.

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