Strange quark collectivity of ϕ meson at RHIC
J. H. Chen, Y. G. Ma*, G. L. Ma, H. Z. Huang, X. Z. Cai, Z. J. He, J. L. Long, W. Q. Shen, J. X. Zuo
Abstract
Based on A Multi-Phase Transport model, the elliptic flow v2 of ϕ mesons which is reconstructed from K+K- at the Relativistic Heavy Ion Collider (RHIC) energy has been studied. The results show that reconstructed v2 of ϕ meson can keep the earlier information before ϕ decays and it seems to obey the number of constituent quark scaling as other mesons and baryons. This result indicates that the ϕ v2 mostly reflects the parton level collectivity developed during the early stage of the collisions and the strange and light up/down quarks have similar collectivity properties before the hadronization.
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