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Congrats to @atlasexperiment.bsky.social for the observation the Bc*⁺ meson. It's hadron number 82 at the LHC. It's been 14 year since ATLAS reported the first new particle observed at the LHC, the χb(3P). All hadrons are at www.koppenburg.ch/particles.html Preprint: arxiv.org/abs/2605.16228

18/5/26, 7:28 am4 reposts22 likes

Patrick Koppenburg 🐧

@koppenburg.ch

22 May

With text from CERN bsky.app/profile/cern...

CERN@cern.bsky.social

ATLAS observes new composite particle The ATLAS Collaboration reports the first observation of the Bc*+ meson, an excited counterpart of a particle made up of a charm quark and a bottom antiquark. 🔗Find out more: home.cern/atlas-observ... @atlasexperiment.bsky.social