Speaker
Description
The dominant process for the decay of a b quark is $b \to cW^{*-}$, resulting in a flavor correlated c quark and a virtual W. The decay of W boson produces either a $\bar{u}$d or $\bar{c}$s quark pair,both processes are Cabibbo-allowed and $\bar{c}$s is suppressed only by a phase-space factor. We present an analysis of inclusive $B^-$ and $\bar{B^0}$ meson decays to correlated $D_s^+$X and anti-correlated $D_s^-$X using Belle II simulated data sample corresponding to integrated luminosity of 1 $ab^{-1}$ at the $\Upsilon(4S)$ resonance. Events are selected by completely reconstructing one B meson and searching for a bound state with charm quark in the rest of the event. Reconstruction and selection of reconstructed B are performed in FEI (Full Event Interpretation). This study provides the evidence for correlated $D_s^+$ production, which is not well-understood and less common process. This will help us deepen our understanding and improve old measurements on $\bar{B} \to D_s X$.
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