CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins88% CONFIDENCEOverall confidence: 88%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
CERN's own press release is dated the day of the seminar, and Wikipedia's[2] Higgs boson article repeats it throughout: "On 4 July 2012, the discovery of a new particle with a mass between 125 and 127 GeV/c2 was announced" and "On 4 July 2012 both of the CERN experiments announced they had independently made the same discovery".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.
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