“The TOTEM collaboration at the LHC and the DØ collaboration at the Tevatron collider at Fermilab have discovered an elusive state of three gluons.”
More information:
https://www2.helsinki.fi/fi/uutiset/luonnontieteet/odderon-loytyi-lopultakin (in Finnish)
https://home.cern/news/news/physics/totem-and-do-collaborations-announce-odderon-discovery (CERN)
https://news.fnal.gov/2021/03/totem-and-do-collaborations-announce-odderon-discovery/ (Fermilab)
http://news.ku.edu/2021/03/16/ku-scientists-announce-odderon-observation-hunted-50-years-particle-physicists (The University of Kansas)
Top picture: “Part of the TOTEM installation in the LHC tunnel 220 m downstream from the CMS experiment (Image: CERN)”