The ALICE Collaboration

Collision system size scan of collective flows in relativistic heavy-ion collisions

“…The upwards trend of system size dependence of the response indicates that the transferring efficiency from initial geometry asymmetry to final momentum is higher in large size collision systems than in small ones, on other words the higher multiplicity the system has, the higher transferring efficiency the evolution of system would get. These results are similar to those from experiments [75,76] and more closer to AL-ICE results in Pb+Pb collisions as a function of √ s N N .…”

“…v 2 /ǫ 2 and v 3 /ǫ 3 from the ALICE collaboration in Pb+Pb collisions with centrality 30-40% from Ref. [76]. It is found the p T dependence of v n /ǫ n (n=2,3) in Ca+Ca (O+O) collisions by AMPT model are consistent with those from the ALICE (STAR) and display an obvious system size dependence of v n /ǫ n .…”

“…Also, the p T dependence of v n /ǫ n (n=2,3) is also calculated and presented in panel (b) and (d) respectively. The results are also compared with experimental measurements by the RHIC-STAR data [75] in A+A (U+U, Au+Au, Cu+Au, Cu+Cu) collisions ( N track =140, |η| < 1.0) at top RHIC energy by two particle correlation method with |∆η| > 0.7 and the LHC-ALICE data [76] figure 2 give the v n /ǫ n (n=2,3), respectively. v n /ǫ n (n=2,3) are larger in Ca+Ca collisions than in O+O collisions by AMPT model.…”

“…v 4,22 presents the similar system size dependence as v 4 and this results in that v L 4 shows a more flat trend with the increasing of system size. The experimental results are from the STAR data [75] in U+U, Au+Au, Cu+Au, C+Cu collisions and from ALICE data [76] in Pb+Pb collisions. Two particle correlation method with ∆η gap was adopted in the experimental flow analysis.…”

Sensitivity analysis for observables of the chiral magnetic effect using a multiphase transport model

“…Relativistic heavy-ion collisions provide us an unique way to explore the natures of quark gluon plasma(QGP) experimentaly [1,2]. In order to probe the QGP, many observables have been carried out experimentally, such as jet quenching [3][4][5] and collective flow [6][7][8][9]. Recently, the chiral magnetic effect (CME) has been proposed as a good observable which reveals some topological and electromagnetic properties of the QGP.…”