Measurements of nuclear Modlflcation Factor and Elliptic Flow of Φ mesons at RHIC

摘要

1) Measure the productions of Φ for various collision energy and collision system. 2) the Φ spectra of dAu and pp collision can be described better by a double exponential function, which is different in AuAu collision. 3) Both R_(dAu) and R_(cp) of Φ are grouped into mesons and baryons. It indicates that the particle production is dividing by particle type rather than particle mass. 4) R_(cp) plots show no suppression in d+Au collision, the suppression in 62.4GeV Au+Au is weaker than that in 200GeV 5) The elliptic flow v2 have been measured in run IV Au+Au 200GeV collision and the NCQ-scaling of elliptic flow have been discussed.