Charm results at Belle and Belle II

Sumitted to PubDB: 2024-07-05

Category: Talk, Visibility: Public

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Authors	Paul Stanley Gebeline
Date	June 3, 2024
Belle II Number	BELLE2-TALK-CONF-2024-086
Abstract	The Belle and Belle II experiments have collected a 1.4 ab−1 sample of e +e − collision data at centreof-mass energies near the Υ(nS) resonances. These samples contain a large number of e +e − → cc¯ events that produce charmed mesons. Direct CP violation is searched for in D0 → K0 SK0 S decays and D-meson decays to a four-body final state. For the four-body decays, asymmetries in the distributions of triple and quadruple moments probe for CP violation. We present searches for rare flavour-changing neutral current c → uℓ+ℓ − processes in several decay modes. Further, we study several decays of the Λc and Ξc to determine branching fractions, as well as CP asymmetries in singly Cabibbo-suppressed decays.
Conference	BEACH 2024