Abstract:
We study the influence of the meson cloud of the nucleon on predictions of the Monte Carlo Glauber model for the charged particle multiplicity density at mid-rapidity in $AA$ collisions. We find that for central $AA$ collisions the meson cloud can increase the multiplicity density by $\sim16$–$18\%$. The meson–baryon Fock component reduces the required fraction of the binary collisions by a factor of $\sim 2$ for $\mathrm{Au + Au}$ collisions at $\sqrt{s}=0.2TeVs=0.2TeV$ and $\sim1.5$ for $\mathrm{Pb + Pb}$ collisions at $\sqrt{s}=2.78TeVs=2.78TeV$.
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