A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider - Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Aguilo, E.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; et al. (SCIENCE, 2012)