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Angular power spectrum of heavy ion collisions

机译:重型离子碰撞的角度功率谱

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Particles produced in heavy ion collisions carry information about anisotropies present already in the early state of the system and play a crucial role in understanding the quark gluon plasma and its evolution. We explore the angular power spectrum of particle multiplicities in such heavy ion collisions to extract fluctuations in particle multiplicities on the surface a sphere. Results are presented for Pb-Pb data at root S-NN = 2.76 TeV, extracted from the ALICE open data portal. We find that odd modes of the power spectrum display a power-law behavior with corresponding index beta, which is found to be close to unity. We also demonstrate that the angular power spectrum allows us to extract accurately the flow coefficients of noncentral collisions.
机译:重离子碰撞中产生的颗粒携带有关在系统的早期状态的各向异性的信息,并在理解夸克胶质血浆及其演变方面发挥至关重要的作用。 我们在这种重离子碰撞中探讨了颗粒多个颗粒多个粒子的角度谱,以提取在球体上的粒子中的波动。 从Alice Open Data Portal中提取的根S-NN = 2.76 TEV的PB-PB数据呈现了PB-PB数据。 我们发现功率谱的奇数模式显示了具有相应索引测试版的幂律行为,该行为被发现接近Unity。 我们还证明了角度功率谱允许我们精确地提取非中心碰撞的流量系数。

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