Sensitivity study for a $B \rightarrow K_{S} \ell \ell$ decay-time dependent analysis at Belle II

Sumitted to PubDB: 2026-05-08

Category: Master Thesis

Tags: Belle

Principal Authors Dennis Rodermund
Date 2026-05-08
Belle II Number BELLE2-MTHESIS-2026-031
Abstract This thesis presents a Sensitivity study for a $B \rightarrow K_{S} \ell \ell$ decay-time dependent analysis at Belle II. It will be shown that with the currently accessible datasets of Belle and Belle II a sensitivity of 0.49 for $S_\text{CP}$ and 0.40 for $C_\text{CP}$ can be achieved. The remaining uncertainty is dominated by the low statistics. The sensitivity is estimated using a MVA based event selection with the usage of BDTs followed by a multidimensional maximum likelihood fit.
Institute Goettingen

Files