Searches for dark sector particles at Belle and Belle II

Sumitted to PubDB: 2024-11-27

Category: Proceeding, Visibility: Public

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Authors	Rajesh Kumar Maiti
Date	Nov. 11, 2024
Belle II Number	BELLE2-CONF-PROC-2024-028
Abstract	Belle and Belle II experiments gathered around 1.5 ab$^{-1}$ of dataset near $\Upsilon(nS)$ resonances, which have constrained kinematics and low multiplicity suitable for dark sector searches. Both experiments have excellent sensitivity for dark sector searches in the few MeV - 10 GeV range. The latest dark sector searches performed by both collaborations, which constrain a variety of dark mediators, are discussed.