CERN Physicists Discover Four-Charm-Quark Particle, Physics

Physicists from CERN’s LHCb Collaboration have discovered a new tetraquark particle, named X(6900), composed of two charm quarks and two charm antiquarks.

Scientists at CERN have discovered too many particles for physics to keep up

Physicists find new 'charm' particle

The Large Hadron Collider experiment to make quark-gluon plasma

SMU Physicist Explains Significance of Latest Cern Discovery Related to the Higgs Boson – Research

Inquiring Minds

Physicists Find New Particle With a Double Dose of Charm

Physicists detect whiff of new particle at the Large Hadron Collider, Science

Charm quark - Wikipedia

Physicists at CERN Just Discovered a Brand New Particle

CERN: The Standard Model Of Particle Physics

First 'open flavour' tetraquark is spotted by LHCb at CERN – Physics World

Impossible' Particle Discovery Adds Key Piece to the Strong Force Puzzle

CMS observes a potential family of tetra-quark states composed only of charm quarks