The finding deals a significant blow to the theory of physics known as supersymmetry.
Many researchers had hoped the LHC would have confirmed this by now.
Supersymmetry, or SUSY, has gained popularity as a way to explain some of the inconsistencies in the traditional theory of subatomic physics known as the Standard Model.
The new observation, reported at the Hadron Collider Physics conference in Kyoto, is not consistent with many of the most likely models of SUSY.
Prof Chris Parke, who is the spokesperson for the UK Participation in the LHCb experiment, told BBC News: "Supersymmetry may not be dead but these latest results have certainly put it into hospital."
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