The LHC detects a new particle, awaited for over 20 years
Physicists at CERN's Large Hadron Collider have discovered a new particle, called Xicc+, which contains two charm quarks and a down quark. The finding resolves a 20-year-old mystery and provides new insights into the strong nuclear force that binds quarks together.
A new particle has been detected at CERN's Large Hadron Collider. The particle, called Xicc+, contains two charm quarks and a down quark. It is a heavier analogue of the proton and had been predicted to exist for over 20 years. The discovery was made possible by upgrades to the LHCb experiment, which allowed for more sensitive particle searches. The Xicc+ particle has a predicted lifetime of six times shorter than its sister particle, Xicc++. The finding has a statistical significance of over 7 sigma, confirming its existence.
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