From Symmetry/Breaking: “Pierre Auger Observatory tests particle knowledge beyond reach of LHC” 

August 27, 2012
Kathryn Jepsen

“Before accelerator physicists can declare the discovery of a Higgs boson or any other new addition to the particle zoo, they need to prove they understand the particles they’re colliding.

Scientists at the Pierre Auger Cosmic Ray Observatory in Argentina recently tested the theory that governs the behavior of protons, the particles that collide in the Large Hadron Collider. They did it at energies much higher than manmade accelerators can reach.

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Good news: The theory checks out.”

On the subject of understanding protons, Auger picks up where the LHC leaves off, said Fermilab physicist Eun-Joo Ahn. Ahn presented the result, which was published this month in Physical Review Letters, at a seminar on Aug. 24 at Fermilab.”

Talk about cool,

“The Pierre Auger Observatory recently studied cosmic rays to make the world’s most precise proton-proton interaction measurement at an energy inaccessible at the LHC, 57 TeV.”

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Auger Cosmic Ray Shower

See the full article here.