Lambda hyperon polarization in relativistic heavy ion collisions from a chiral kinetic approach

Sun Yifeng; Ko Che Ming

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Lambda hyperon polarization in relativistic heavy ion collisions from a chiral kinetic approach

机译：Lambda超焦极化中的相对论重离子碰撞，来自手性动力学方法

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Using a chiral kinetic approach based on initial conditions from a multiphase transport model, we study the spin polarizations of quarks and antiquarks in noncentral heavy ion collisions at the BNL Relativistic Heavy Ion Collider. Because of the nonvanishing vorticity field in these collisions, quarks and antiquarks are found to acquire appreciable spin polarizations in the direction perpendicular to the reaction plane. Converting quarks and antiquarks to hadrons via the coalescence model, we further calculate the spin polarizations of Lambda and anti-Lambda hyperons and find their values comparable to those measured in experiments by the STAR Collaboration.

机译：利用基于多相输运模型初始条件的手征动力学方法，我们在BNL相对论重离子对撞机上研究了非中心重离子碰撞中夸克和反夸克的自旋极化。由于这些碰撞中的非各向异性涡度场，夸克和反夸克在垂直于反应平面的方向上获得了可观的自旋极化。通过聚结模型将夸克和反夸克转化为强子，我们进一步计算了Lambda和反Lambda超子的自旋极化，发现它们的值与STAR Collaboration在实验中测量的值相当。

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《Physical review, C》 |2017年第2期|共6页
作者
Sun Yifeng; Ko Che Ming;
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作者单位

Texas A&

M Univ Inst Cyclotron College Stn TX 77843 USA;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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机译：Lambda超焦极化中的相对论重离子碰撞，来自手性动力学方法
7. Λ hyperon polarization in relativistic heavy ion collisions from a chiral kinetic approach [J] . Yifeng Sun, Che Ming Ko Physical Review C . 2017,第期

机译：λ从手性动力学方法中相对论重型离子碰撞中的高速偏振
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机译：相对论重离子碰撞中Lambda超子的横向极化的测量
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机译：相对论重离子碰撞的动力学方法
10. Chiral Magnetic and Vortical Effects in Relativistic Heavy Ion Collisions [D] . Sun, Yifeng. 2017

机译：相对论重离子碰撞中的手性磁性和志性效应
11. Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions [O] . A. Andronic, F. Arleo, R. Arnaldi, -1

机译：大型强子对撞机时代的重口味和重金属生产：从质子-质子到重离子碰撞
12. Lambda hyperon polarization in relativistic heavy ion collisions from the chiral kinetic approach [O] . Sun, Yifeng, Ko, Che Ming 2017

机译：相对论重离子碰撞中的λ超极化极化手性动力学方法
13. First observation of Lambda (sup 0),(bar Lambda) (sup 0),K(sub s)(sup 0) production in relativistic heavy ion collisions at the AGS [R] . Hallman, T., Madansky, L., Welsh, R., 1990

机译：在aGs的相对论重离子碰撞中首次观察到Lambda（sup 0），（bar Lambda）（sup 0），K（sub s）（sup 0）的产生

Lambda hyperon polarization in relativistic heavy ion collisions from a chiral kinetic approach

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