$R_{\rm inv}$ parameters vs. $m_{\rm T}$ for the three centralities considered for $\pi^{\pm}\pi^{\pm}$, $\rm K^{\pm}\rm K^{\pm}$,$\Kzs\Kzs$, $\rm {p}\rm {p}$, and $\overline{\rm p}\overline{\rm p}$. Statistical (thin lines) and systematic (boxes) uncertainties are shown.