Study of the NCQ Scaling of Elliptic Flow in p-Pb Collisions with a Multiphase Transport Model
The number of constituent quark(NCQ)scaling of elliptic flow in heavy-ion collisions is one of the important sig-nals of parton anisotropic degrees of freedom.In this work,we systematically study the v2 of light flavor hadrons as well as its NCQ scaling in p-Pb collisions at 5.02 TeV,with a multiphase transport(AMPT)model.Based on the advanced flow ex-traction method,the AMPT model calculations provide a good description of the measured transverse momentum(pT)-differ-ential v2 of mesons but exhibit a slight deviation of the baryon v2.We find that the NCQ scaling is mainly driven by the com-bination of parton cascade and quark recombination,and also affected by the nonflow contribution and hardronic rescattering.This study provides new insights into understanding the origin of collective-like behaviors in small collision system.
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