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SUMMARY:Colloquium: Spectroscopy of Hadrons at the COMPASS and Belle (II) 
 Experiments
DTSTART:20260611T080000Z
DTEND:20260611T090000Z
DTSTAMP:20260501T034600Z
UID:indico-event-16954@indico.global
DESCRIPTION:Speakers: Stefan Wallner (Max Planck Institute for Physics\, G
 arching)\n\nQuark confinement in hadrons is a well-established phenomenon.
  However\, a complete quantitative understanding of the principles governi
 ng the quark configurations realized in nature remains elusive. To address
  this\, we study the excitation spectra of baryons and mesons\, including 
 searches for exotic states that defy the rules of the quark model. We pres
 ent results from the Belle and Belle II experiments\, utilizing the world
 ’s largest dataset of e+e− collisions recorded at and around the Υ(nS
  ) resonances. We report on heavy-meson decays\, the first search for exot
 ic pentaquarks in inclusive Υ(1S \,2S ) decays\, and precision studies of
  light mesons in τ-lepton decays.\nComplementary\, we discuss the strange
 -meson spectrum studied at the COMPASS experiment via diffractive scatteri
 ng of a high-energy kaon beam. A partial-wave analysis of the K−π−π+
  final state yields precision measurements of a broad spectrum of strange 
 mesons and identifies a candidate for an exotic strange meson.\n\nhttps://
 indico.global/event/16954/
LOCATION:Besprechungsraum 2 (Marietta Blau Institute for Particle Physics\
 , Dominikanerbastei 16 [PSK]\, 1010 Vienna)
URL:https://indico.global/event/16954/
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