Speaker
Description
In this report, we present a method for the reconstruction of neutral long-lived kaons ($K_L^0$) using Monte Carlo simulations of the Belle II detector at the SuperKEKB accelerator in Tsukuba, Japan. The detector’s nearly $4\pi$ hermetic coverage, layered subdetector structure, and the precisely known initial kinematics of the $e^-\,e^+$ collisions provide a unique environment for the study of flavor physics via decays of $B$ mesons, $D$ mesons, and tau leptons.
Due to their long lifetime and primarily hadronic interactions, $K_L^0$ mesons are notoriously difficult to reconstruct. They often penetrate the inner tracking systems without leaving a trace and may only leave partial energy deposits in the Electromagnetic Calorimeter (ECL) or hits in the $K_L^0$ and Muon detector (KLM). While these subdetectors can
capture a fraction of $K_L^0$ interactions, their overall reconstruction remains a significant challenge for many Belle II analyses.
