Measurements of electroweak penguin decays at Belle and Belle II

Sumitted to PubDB: 2025-05-09

Category: Talk, Visibility: Latest Version Public

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Authors	Renu Garg
Date	2025-05-09
Belle II Number	BELLE2-TALK-2025-071
Abstract	The Belle and Belle~II experiments have collected a 1.1~ab$^{-1}$ sample of $e^+ e^-\to B\bar{B}$ collisions at a centre-of-mass energy corresponding to the $\Upsilon(4S)$ resonance. These data, with low particle multiplicity and constrained initial state kinematics, are an ideal environment to search for rare electroweak penguin and radiative $B$ decays. Results include those related to the following decays: $b\to s^+\nu\bar{\nu}$; $B\to K^{(*)}\tau^+\tau^-$; and $B^0\to K^{0}_{\rm S}\tau^+\ell^-$, where $\ell$ is an electron or muon.
Conference	Phenomenology 2025 Symposium (PHENO2025) (start: 2025-05-19)