论文标题
在$ \ sqrt {s _ {\ rm nn}} = 8.16 $ tev中，在高型p-pb碰撞中，在前进和向后快速的方位角各向异性的测量值
Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p-Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV
论文作者
论文摘要
据报道，使用LHC上的爱丽丝检测器，对$ \ sqrt {s _ {\ rm nn}} = 8.16 $ tev产生的含有含有的含有的含有的含有的含有剂量的方位角各向异性。粒子方位角分布（$ v_2 $）的二阶傅立叶系数的测量是在0-20％高质量间隔中的横向动量$ p _ {\ rm t} $的函数执行的。 CMS} <-2.96 $）宽$ p _ {\ rm t} $范围，$ 0.5 <p _ {\ rm t} <10 $ gev/$ c $，其中预计在$ p _ {\ rm tm tm tm p _ flavour强子衰减中会产生重型燃料衰减的主导贡献。 $ v_2 $的包含muons系数是使用两种不同的技术（即两粒子累积物，首次用于重型风味测量值和前中央的两粒子相关性）提取的。两种技术都均可兼容结果。 $ V_2 $的正向和后退速度都大于$4.7σ$和$7.6σ$，在间隔$ 2 <p _ {\ rm t} <6 $ gev/$ gev/$ c $中分别衡量。在$ \ sqrt {s _ {\ rm nn}}} = 5.02 $ TEV和基于AMPT和CGC的理论计算的P-PB碰撞中的先前测量值进行比较。这些发现对小碰撞系统中集体行为起源的理论解释施加了新的限制。
The study of the azimuthal anisotropy of inclusive muons produced in p-Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV, using the ALICE detector at the LHC is reported. The measurement of the second-order Fourier coefficient of the particle azimuthal distribution, $v_2$, is performed as a function of transverse momentum $p_{\rm T}$ in the 0-20% high-multiplicity interval at both forward ($2.03 < y_{\rm CMS} < 3.53$) and backward ($-4.46 < y_{\rm CMS} < -2.96$) rapidities over a wide $p_{\rm T}$ range, $0.5 < p_{\rm T} < 10$ GeV/$c$, in which a dominant contribution of muons from heavy-flavour hadron decays is expected at $p_{\rm T} > 2$ GeV/$c$. The $v_2$ coefficient of inclusive muons is extracted using two different techniques, namely two-particle cumulants, used for the first time for heavy-flavour measurements, and forward-central two-particle correlations. Both techniques give compatible results. A positive $v_2$ is measured at both forward and backward rapidities with a significance larger than $4.7σ$ and $7.6σ$, respectively, in the interval $2 < p_{\rm T} < 6$ GeV/$c$. Comparisons with previous measurements in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV, and with AMPT and CGC-based theoretical calculations are discussed. The findings impose new constraints on the theoretical interpretations of the origin of the collective behaviour in small collision systems.
