Latest $\tau$ and dark sector results from Belle and Belle~II

Sumitted to PubDB: 2025-01-14

Category: Talk, Visibility: Latest Version Public

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Authors	Stefan Wallner
Date	2025-01-28
Belle II Number	BELLE2-TALK-2025-001
Abstract	Belle and Belle II have collected world-leading data samples of tau decays. We will report on recent tests of lepton universality and searches for lepton-flavor violation in these decays. They allow us to probe the Standard Model with high precision. Belle II has an unique reach for a broad class of models that postulate the existence of dark matter particles with MeV--GeV masses. We will present recent world-leading results from Belle II searches for several dark matter candidates, as well as the near-term prospects for other dark-sector searches.
Conference	Winter Meeting on Nuclear Physics (Bormio)