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We calculate $\phi$ meson transverse momentum spectra in p+p collisions aswell as their nuclear suppressions in central A+A collisions both at the RHICand the LHC in LO and NLO with the QCD-improved parton model. We have includedthe parton energy loss effect in hot/dense QCD medium with the effectivelymedium-modified $\phi$ fragmentation functions in the higher-twist approach ofjet quenching. The nuclear modification factors of $\phi$ meson in centralAu+Au collisions at the RHIC and central Pb+Pb collisions at the LHC areprovided, and a nice agreement of our numerical results at NLO with the ALICEmeasurement is observed. Predictions of yield ratios of neutral mesons such as$\phi/\pi^0$, $\phi/\eta$ and $\phi/\rho^0$ at large $p_T$ in relativisticheavy-ion collisions are also presented for the first time.

Nuclear suppression of $\phi$ meson yields with large $p_T$ at the RHIC and the LHC