Sumitted to PubDB: 2023-05-28

Category: Master Thesis, Visibility: Public

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Authors	Vishal Bhardwaj, Debjit Ghosh
Date	2020-01-01
Belle II Number	BELLE2-MTHESIS-2023-027
Abstract	The thesis aims to perform a sensitivity study of the $B\to X(3823)K\pi$ in the Belle II data set. If $X(3823)$ is $\psi (1{}^3{D}_2)$ state with $J^{PC}=2^{--}$, like ${\chi }_{c2}$ ($J^{PC}=2^{++}$), its branching fraction of three body decay mode $B\to ({\chi }_{c1}\gamma )K\pi$ will be higher than its two body decay mode $B\to ({\chi }_{c1}\gamma )K$. We performed signal Monte Carlo study for the two and three body decay modes and estimated the reconstruction efficiency of $\psi (2S)$, $X(3823)$, and $X(3872)$. We improved the resolution of $M({\chi }_{c1}\gamma )$ using the $\gamma$ energy scaling by forcing $\mathrm{\Delta }E$ to be zero. We planned to do the background study in order to estimate the sensitivity. Due to the current COVID-19 scenario, we could not complete this task. However, we do provide the expected signal efficiency for the decay mode of interest.
Conference	Mohali

• BELLE2-MTHESIS-2023-027.pdf (versions: 1)
  latest upload: 2024-12-02