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A penguin-shaped anomaly first detected two years ago has survived a comprehensive new analysis of data from the first run of CERN’s Large Hadron Collider (LHC), scientists revealed today at a meeting in La Thuile, Italy.

The anomaly, an unexpected measurement of rare particle decays called “penguin processes,” isn’t statistically significant enough to constitute a discovery, but if the signal strengthens in the LHC’s upcoming second run, it will imply the existence of new elementary particles beyond those of the Standard Model — the precise but incomplete equations that have governed particle physics for 40 years.

“What we find is that this anomaly has persisted,” said Guy Wilkinson, a physicist at the University of Oxford and the spokesperson for the LHCb collaboration, which first detected the statistical bump in penguin decays in 2013. “This is extremely interesting.”

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