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At a seminar at CERN, the ATLAS and CMS experiments each report a new boson at around 125-126 GeV at five sigma, independently and from the same data-taking runs. It is the last unverified piece of the Standard Model.

For many years, physicists have been aware of the existence of this doubly charmed particle because of current physical theories. However, nobody has been successful in observing the particle and it is only now that the baryon with two heavy quarks has been distinctively detected. Known as Ξcc++(Xicc++), this new particle is almost four times heavier than a proton.

An upgrade to increase the LHC's collision rate roughly tenfold, extending the search for rare processes into the 2040s. Estimated date.