, G. S. Guralnik , C. R. Hagen , and T. W. B. Kibble (1964) Discovered Tentatively announced July 4, 2012 (see above), by the ATLAS and CMS teams at the Large Hadron Collider Mass 125.3 ± 0.4 (stat) ± 0.5 (sys) GeV/ c 2 , [ 2 ] 126.0 ±