CERN
Total Charmer

The Large Hadron Collider Just Discovered a Brand-New Particle

byDan Robitzski
7. 1. 20
CERN

The bizarre new particle is all charm. Get it?

Charming Discovery

Physicists at CERN’s Large Hadron Collider just discovered a brand-new kind of subatomic particle — and its composition is a baffling world-first.

The yet-unnamed particle is the first — that we know of — to be entirely made up of the same kind of quark, which is a building block for subatomic particles. In this case, according to preprint research shared online Tuesday, the particle is composed of four charm quarks — an arrangement that could help physicists better probe the underlying forces holding particles together.

Sticking Together

Charm quarks are just one of six flavors of quark, along with up, down, strange, top, and bottom. As one of the heavier flavors, the charm quarks are bound together by the same, poorly-understood fundamental force that binds protons to neutrons. Researchers hope the unusual combination can help them explain how that particular force works.

“Particles made up of four quarks are already exotic,” project spokesperson Giovanni Passaleva said in a press release, “and the one we have just discovered is the first to be made up of four heavy quarks of the same type, specifically two charm quarks and two charm antiquarks.”

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Splitting Off

Next, the team hopes to sort out whether they’ve found a true tetraquark or rather two quark pairings that are bound together like atoms in a molecule — though both would be valuable discoveries.

“Today’s discovery opens another exciting chapter in this scientific book, allowing us to study our theory of matter particles in an extreme case,” spokesperson Chris Parkes said in the release.

READ MORE: Exotic never before seen particle discovered at CERN [University of Manchester]

More on the LHC: The LHC Just Discovered A New System of Five Particles

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