XXVI DAE-BRNS High Energy Physics Symposium 2024

Study of Inclusive Decay $\bar{D}^0 \rightarrow K_S X$ in Belle and Belle II Experiments

Not scheduled

20m

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Oral Quark and lepton flavour physics

Speaker

Mr Neetesh Mudgal

Description

Study of Inclusive Decay $\bar{D}^0 \rightarrow K_S X$

       Neetesh Mudgal (Belle II Collaboration)
INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH
            (IISER) MOHALI, INDIA

We investigate the inclusive decay mode $\bar{D}^0 \rightarrow K_S X$, where $X$ represents any particle that satisfies the decay condition. Within the Belle collaboration, we utilize the $\Upsilon(4S)$ resonance to produce $B^+B^-$ pairs. Following hadron $B$-tagging, the $B^-$ is reconstructed using the FEI algorithm, with the $B^+$ serving as the signal side. On the signal side, we identify the decay $B^+ \rightarrow \bar{D}^0 \pi^+$. Subsequently, the number of $K_S$ mesons in the $\bar{D}^0$ region is determined using the sPlot technique.

We present preliminary results from a Monte Carlo (MC) study focused on the signal and background of this decay mode, as well as on extracting the branching fraction for $\bar{D}^0 \rightarrow K_S X$.

Keywords: Inclusive decay, FEI algorithm, sPlot, Monte Carlo, branching fraction

Presentation materials

QLF_9.pdf