Search for a long-lived spin-0 mediator in $b → s$ transitions at the Belle II experiment
I. Adachi, K. Adamczyk, L. Aggarwal, H. Aihara et autres
Additional spin-0 particles appear in many extensions of the standard model. We search for long-lived spin-0 particles $S$ in $B$-meson decays mediated by a $b\to s$ quark transition in $e^+e^-$ collisions at the $\Upsilon(4S)$ resonance at the Belle II experiment. Based on …