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A Review of Elliptic Flow of Light Nuclei in Heavy-Ion Collisions at RHIC and LHC Energies

机译:重离子碰撞中轻核椭圆流动的研究进展   RHIC和LHC Energies

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摘要

We present a review of the measurements of elliptic flow ($v_{2}$) of lightnuclei ($d$,$\bar{d}$, $t$, $^{3}\rm He$, and $^{3}\overline{\rm He}$) from theRHIC and LHC experiments. Light (anti)nuclei $v_{2}$ have been compared withthat of (anti)proton. We observed a similar trend in light nuclei $v_{2}$ tothat in identified hadron $v_{2}$ with respect to the general observations suchas ($p_{\rm T}$) dependence, low $p_{\rm T}$ mass ordering, and centralitydependence. We also compared the difference of nuclei and antinuclei $v_{2}$with the corresponding difference of $v_{2}$ of proton and antiproton atvarious collision energies. Qualitatively they depict similar behavior. We alsocompare the data on light nuclei $v_{2}$ to various theoretical models such asblast-wave and coalescence. We then present a prediction of $v_{2}$ for$^{3}\rm He$ and $^{4}\rm He$ using coalescence and blast-wave models.
机译:我们对光核($ d $,$ \ bar {d} $,$ t $,$ ^ {3} \ rm He $和$ ^)的椭圆流量($ v_ {2} $)的测量进行了回顾。 {3} \ overline {\ rm He} $)来自RHIC和LHC实验。已将轻(反)核$ v_ {2} $与(反)质子进行了比较。我们观察到轻核$ v_ {2} $的趋势与确定的强子$ v_ {2} $的趋势类似,这取决于一般的观测结果,例如($ p _ {\ rm T} $)依赖性,低$ p _ {\ rm T } $大规模订购和中心性依赖。我们还比较了核和反核$ v_ {2} $的差异与质子和反质子在各种碰撞能量下的对应差异$ v_ {2} $。定性地,它们描绘了类似的行为。我们还将光核$ v_ {2} $上的数据与各种理论模型(如爆炸波和聚结)进行比较。然后,我们使用合并和爆炸波模型对$ ^ {3} \ rm He $和$ ^ {4} \ rm He $给出$ v_ {2} $的预测。

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