https://doi.org/10.1140/epja/i2005-10289-5
Quark-Gluon-Plasma Thermalization
Strange-quark collectivity of the φ-meson at RHIC
1
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, PRC
2
Graduate School of the Chinese Academy of Sciences, 100080, Beijing, PRC
3
University of California, 90095, Los Angeles, CA, USA
* e-mail: ygma@sinap.ac.cn
Received:
31
October
2005
Accepted:
2
January
2006
Published online:
4
August
2006
Based on A Multi-Phase Transport (AMPT) 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 the reconstructed v2 of the 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.
PACS: 24.10.Cn Many-body theory – / 24.10.Pa Thermal and statistical models – / 25.75.Dw Particle and resonance production –
© Società Italiana di Fisica and Springer-Verlag, 2006
