Elliptic flow of ϕ-meson a sensitive probe for onset of de-confinement transition in high energy heavy-ion collisions

Abstract

Elliptic flow (v_2) of ϕ-meson is shown to be a sensitive probe of the partonic collectivity using A Multi Phase Transport (AMPT) model. Within the ambit of the AMPT model with partonic interactions (string melting version), the ϕ-meson v_2 at midrapidity is found to have negligible contribution from hadronic interactions for Au+Au collisions at 200 GeV per nucleon. Changing the hadron cascade time in the model calculations does not change the ϕ-meson v_2, while it reduces the v_2 of proton at low transverse momentum (pT). These observations indicate that a substantial reduction in ϕ-mesons v_2 as a function of colliding beam energy would suggest the dominance of hadronic interactions over partonic interactions.

5 pages and 4 figures. Accepted for publication in Physical Review C

References in corpus (5)

• Scale for the Phase Diagram of Quantum Chromodynamics
• Centrality dependence of charged hadron and strange hadron elliptic flow from sqrt(s_NN) = 200 GeV Au+Au collisions
• Partonic flow and $\varphi$-meson production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Mass ordering of differential elliptic flow and its violation for phi mesons
• Exploring the QCD landscape with high-energy nuclear collisions

Cited by in corpus (12)

• Elliptic flow of identified hadrons in Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7--62.4 GeV
• Centrality and transverse momentum dependence of elliptic flow of multi-strange hadrons and $\varphi$ meson in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Probing Parton Dynamics of QCD Matter with $\Omega$ and $\varphi$ Production
• Review of Recent Results from the RHIC Beam Energy Scan
• Energy dependence study of directed flow in Au+Au collisions using an improved coalescence in AMPT model
• Azimuthal anisotropy measurement of (multi-)strange hadrons in Au+Au collisions at $\sqrt{s_{\text{NN}}}$ = 54.4 GeV
• Effect of in-medium mass-shift on transverse-momentum spectrum and elliptic anisotropy of $\varphi$ meson
• Using the $\varphi$-meson elliptic flow to map the strength of partonic interaction
• Constraining input parameters of AMPT model with $\varphi$ meson production
• Probing the QCD phase diagram with the measurements of $\varphi$-meson production and elliptic flow in the heavy-ion collision at STAR
• Elliptic and triangular flow of (multi-)strange hadrons and $\varphi$ mesons in BES-II energies at STAR
• Elliptic flow of $\varphi$-meson at intermediate $p_T$: Influence of mass versus quark number