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T: Fachverband Teilchenphysik

T 44: Invited Topical Talks II

T 44.2: Invited Topical Talk

Wednesday, March 18, 2026, 14:15–14:45, MED 00.915

Hadron Spectroscopy at Belle (II) — •Stefan Wallner — Max Planck Institute for Physics, Garching, Germany

The Belle and Belle II experiments recorded the world’s largest dataset of e⁺e⁻ collisions at center-of-mass energies at and around the Υ(nS) resonances. This dataset provides diverse opportunities to study the excitation spectrum of mesons and baryons with unparalleled precision. We present measurements of hadrons composed of heavy quarks, searches for exotic states beyond the quark model, and studies of the light-meson spectrum.

Keywords: Belle; Belle II; hadron spectroscopy; partial-wave analysis; PWA