000004040 001__ 4040
000004040 005__ 20231226173152.0
000004040 037__ $$aBELLE2-TALK-CONF-2023-199
000004040 041__ $$aeng
000004040 088__ $$aBELLE2-TALK-DRAFT-2023-175
000004040 100__ $$aSourav Dey
000004040 245__ $$aDark sector searches with tau-pair events at Belle and Belle II
000004040 260__ $$aThe 17th International Workshop on Tau Lepton Physics$$c2023-12-04
000004040 300__ $$amult. p
000004040 520__ $$aThe existence and unknown nature of dark matter motivate dark sector searches at accelerators. The Belle and Belle II experiments enable dark sector searches in the sub-GeV mass region. We search for lepton-flavor-violating tau decays of type tau to l alpha, where l is e/mu and alpha is an invisible particle. We also search for the existence of a heavy neutrino in tau decays. Finally, we present a recent search for a dark, leptophilic scalar particle produced in association with pairs at Belle.
000004040 8560_ $$fdjaffe@bnl.gov
000004040 8564_ $$uhttps://docs.belle2.org/record/4040/files/BELLE2-TALK-CONF-2023-199.pdf