Machine Learning Application for $\mathbf{\Lambda}$ Hyperon Reconstruction in CBM at FAIR

Abstract

The Compressed Baryonic Matter experiment at FAIR will investigate the QCD phase diagram in the region of high net-baryon densities. Enhanced production of strange baryons, such as the most abundantly produced $\Lambda$ hyperons, can signal transition to a new phase of the QCD matter. In this work, the CBM performance for reconstruction of the $\Lambda$ hyperon via its decay to proton and $\pi^{-}$ is presented. Decay topology reconstruction is implemented in the Particle-Finder Simple (PFSimple) package with Machine Learning algorithms providing efficient selection of the decays and high signal to background ratio.