Nuclear suppression of the meson yields with large at the RHIC and the LHC

Wei Dai; Xiao-Fang Chen; Ben-Wei Zhang; Han-Zhong Zhang; Enke Wang

doi:10.1140/epjc/s10052-017-5136-7

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2017) 77: 571
https://doi.org/10.1140/epjc/s10052-017-5136-7

Regular Article - Theoretical Physics

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

Wei Dai¹^*, Xiao-Fang Chen², Ben-Wei Zhang¹, Han-Zhong Zhang¹ and Enke Wang¹

¹ Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan, 430079, China
² School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China

^* e-mail: davidwillcn2008@gmail.com

Received: 6 February 2017
Accepted: 9 August 2017
Published online: 28 August 2017

Abstract

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