Speaker
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\noindent{\underline{The 12th International Conference on Nucleus-Nucleus Collisions, June 21-26, 2015, Catania, Italy}}
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{\large \bf Quark coalescence from RHIC to LHC}
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\underline{V.Minissale}$^{1,2}$, F.Scardina$^{1,2}$, V.Greco$^{1,2}$
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{\em $^1$ Department of Physics and Astronomy, University of Catania, Via S. Sofia 62,
I-95123, Catania, Italy.} \
{\em $^2$ INFN-LNS,Laboratori Nazionali del Sud, Via S. Sofia 64,I-95123, Catania, Italy}\
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We discuss the application of a phase-space coalescence plus fragmentation model for the hadronization of the quark-gluon plasma (QGP) created in ultra-relativistic heavy-ion collisions. Recombination of minijet partons with the partons from the QGP is also included and plays a role at $p_{T}\sim 2-4\mbox{ GeV}$ where the baryon to meson anomaly is observed experimentally. \ We show our prediction for light and strange hadrons transverse momentum spectra ($\pi$, \textit{p}, \textit{k}, $\Lambda$, $\phi$, $\Omega$ ) and baryon to meson ratios (\textit{p}/$\pi$, $\Lambda$/\textit{k}, $\Omega$/$\phi$) in a wide range of $p_{T}$, both for RHIC and LHC energies. The baryon to meson ratio at LHC presents similar features of that at
RHIC, but with a shift in the peak of about $0.5 \mbox{ GeV}$, and this is well predicted by our model.
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