Searches for invisible new particles at Belle II

Sumitted to PubDB: 2024-01-15

Category: Proceeding, Visibility: Public

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Authors	Luigi Corona
Date	2024-01-15
Belle II Number	BELLE2-CONF-PROC-2024-005
Abstract	Belle II has unique sensitivity for a broad class of models postulating the existence of dark matter particles with masses in the MeV–GeV range. We present recent world-leading results from Belle II searches for several non-SM particles. These include production of 𝑍′ bosons, axion-like particles, and dark scalars in association with two muons in e+e- collisions; long-lived (pseudo)scalars produced in decays of B-mesons; and invisible particles produced in decays of tau leptons.