ϕ-meson production at forward/backward rapidity in high-energy nuclear collisions from a multiphase transport model

الأصل · EN

Within the framework of a multiphase transport model (AMPT), the ϕ-meson production is studied in d+Au collisions at = 200 GeV in the forward (d-going, 1.2<y<2.2) and backward (Au-going, -2.2<y<-1.2) direction. The AMPT model with string melting version (parton cascade turning-on) describes the experimental data well, while the pure hadronic transport scenario of the AMPT model underestimates the ϕ-meson production rate in comparison with the data. Detailed investigations including the rapidity, transverse momentum and collision system size dependencies of ϕ-meson nuclear modification factor indicate that a combination of the initial state effect and a follow-up parton cascade is required in the AMPT model to describe the data. Similar calculations are also present in p+Pb collisions at = 5.02 TeV and p+p collisions at = 2.76 TeV. The findings from a comparison of AMPT model study with the data are consistent with that at RHIC energy.