Search for vectorlike light-flavor quark partners in proton-proton collisions at root s=8 TeV - Sirunyan, AM; Tumasyan, A; Adam, W; Asilar, E; Bergauer, T; Brandstetter, J; Brondolin, E; Dragicevic, M; Eroe, J; Flechl, M; Friedl, M; Fruehwirth, R; et al. (PHYSICAL REVIEW D, 2018)