Transverse Spin Dependent Identified Hadron Cross-sections in $p$$^\uparrow$+$p$ Collisions at $\sqrt{s} = 62.4$ and $200$ GeV

Transverse spin dependence of particle production, Single Spin Asymmetries (SSAs), at the energy regime where pQCD is applicable are expected to be negligibly small in the lowest-order QCD approximation, whereas experimentally large SSAs have been observed at high Feynman-$x$($x_F$). Recently, new measurements of SSAs have been available from semi-inclusive deep-inelastic scattering and $p^\uparrow$+$p$ at RHIC providing more insight into the fundamental mechanisms of SSAs as well as the relevant hadron structure. The BRAHMS experiment at RHIC has unique capabilities to explore the high-$x_F$ kinematic region with particle identification. Measurements of cross-sections and single spin asymmetries of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$, from transversely polarized proton collisions at $\sqrt{s} = 62.4$ and 200 GeV are presented. The results are discussed in the context of theoretical models based on pQCD. The energy and flavor dependent SSAs combined with the cross-sections at high-$x_F$ bring new insight into the perturbative Quantum Chromodynamical description of partonic dynamics at RHIC.