Physicists discover a heavy cousin of the proton at CERN’s Large Hadron Collider

Physicists discover a heavy cousin of the proton at CERN’s Large Hadron Collider CERN scientists have discovered a long-predicted heavy cousin of the proton, finally solving a 20-year mystery.

• Date:
• March 19, 2026
• Source:
• University of Manchester
• Summary:
• A new subatomic particle known as the Ξcc⁺ has been discovered at CERN’s Large Hadron Collider. This heavy proton-like particle contains two charm quarks and was detected using the upgraded LHCb experiment. Scientists observed it...