000004066 001__ 4066
000004066 005__ 20240115055133.0
000004066 037__ $$aBELLE2-CONF-PROC-2024-004
000004066 041__ $$aeng
000004066 100__ $$aManish Kumar
000004066 245__ $$aStudy of $B^{+} \to D_{s}^{(*)+}\pi^{0}$ mode at Belle
000004066 260__ $$a$$c2024-01-15
000004066 300__ $$a4
000004066 520__ $$aWe present here the sensitivity study of the rare decay modes $B^{+} \to D_{s}^{+}\pi^{0}$ and $B^{+} \to D_{s}^{(\ast)+}\pi^{0}$, at Belle using a simulated sample. The {\sc BaBar} collaboration has measured the branching fraction $\mathcal{B}(B^{+} \to D_{s}^{+}\pi^{0}) = (1.5^{+0.5}_{-0.4} \pm 0.1 \pm 0.2) \times 10^{-5}$ with a data sample of $232 \times 10^{6}$ $B\bar{B}$ events collected at the $\Upsilon(4S)$ resonance. The combined data from the Belle and Belle II experiments is  five times larger than the previously used. This will allow us to provide an improved measurement of the branching fraction for these decay modes, for a better bound on the ratio of the amplitudes $r_{D\pi} = \dfrac{A(B^0 \to D^+\pi^-)}{A(B^0 \to D^-\pi^+)}$ (assuming SU(3) symmetry), which is important input to extract weak phases in the time-dependent measurement of $B^0 \to D^\pm\pi^\mp$ decays. \\ In addition, we aim to search for the $B^{+} \to D_{s}^{(\ast)+}\pi^{0}$ mode, whose  upper limit is provided by the ARGUS collaboration based on  $209 \times 10^{3}$ $B\bar{B}$ events.
000004066 6531_ $$aRare decays
000004066 6531_ $$aBranching fraction
000004066 700__ $$aVishal Bhardwaj
000004066 8560_ $$fmanishkumar@iisermohali.ac.in
000004066 8564_ $$uhttps://docs.belle2.org/record/4066/files/BELLE2-CONF-PROC-2024-004.pdf