A new particle and probably a new force of nature were discovered at LHC

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Results released by the Large Hadron Collider (near Geneva) on Tuesday suggest that a new particle was discovered and this is the first sign of a new kind of physics. The standard model of particle physics describes the particles and forces that govern the subatomic world. The model also explains three of the four fundamental forces of nature: electromagnetism; the strong force, which holds atomic nuclei together; and the weak force which causes nuclear reactions in the sun. It does not explain the fourth force, gravity, and perhaps more strikingly, says nothing about the 95% of the universe that physicists believe is not constructed from normal matter.

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Scientists believe they may have discovered a “brand-new force of nature”. The anomaly spotted at the time was that the quarks appeared to also decay into another type of lepton — muons — less often than they decayed into electrons. “This force would be extremely weak, which is why we haven’t seen any signs of it until now, and would interact with electrons and muons differently,” they wrote. They will collect more data from the LHC and other experiments around the world, such as Belle II in Japan, in the hope of confirming what is happening. The researchers said that further experimentation was needed to confirm the results.