CERN Physicists Discover Four-Charm-Quark Particle, Physics
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Physicists from CERN’s LHCb Collaboration have discovered a new tetraquark particle, named X(6900), composed of two charm quarks and two charm antiquarks.
![](https://home.cern/sites/default/files/2023-03/combined.resized.jpeg)
ATLAS and CMS observe simultaneous production of four top quarks
![](https://cmsexperiment.web.cern.ch/sites/default/files/field/image/StandardModel_b_0.jpg)
What do we already know?
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Physicists Find New Particle With a Double Dose of Charm
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/07/071116_EC_tetraquark_feat_free.jpg)
Three cousins join family of four-quark particles
![](https://imageio.forbes.com/blogs-images/startswithabang/files/2017/04/bul-pho-2008-019-1200x803.jpg?height=475&width=711&fit=bounds)
New LHC Results Hint At New Physics, But Are We Crying Wolf?
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Particle physics: Surprise discovery reveals charm quark within the proton
![](https://physicsworld.com/wp-content/uploads/2000/10/pw-13-10-09-01.gif)
A strange quark plasma – Physics World
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Large Hadron Collider - Wikipedia
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The Higgs boson, ten years after its discovery - European Physical Society (EPS)
![](https://cms.cern/sites/default/files/2022-06/Picture%201_0.png)
CMS observes a potential family of tetra-quark states composed only of charm quarks
![](https://scitechdaily.com/images/Higgs-Boson-in-Association-With-Z-Boson.jpg)
Homing In on the Higgs Boson's Interaction With the Charm Quark at the Large Hadron Collider
![](https://www.interactions.org/sites/default/files/styles/original_image_phone/public/Logo-Higgs10-medres_0.png?itok=UGFulBNc)
The Higgs boson, ten years after its discovery
![](https://cdn.hswstatic.com/gif/lhc-discoveries-4-orig.jpg)
5 Discoveries Made by the Large Hadron Collider (So Far)
![](https://www.snexplores.org/wp-content/uploads/2019/11/042716_ec_LNC_free.jpg)
Possibility of strange new particle surprises physicists
![](https://images.newscientist.com/wp-content/uploads/2023/07/18171235/SEI_164532634.jpg?crop=4:3,smart&width=1200&height=900&upscale=true)
Exotic pentaquark particle found at CERN's Large Hadron Collider