Measurement of dijet azimuthal decorrelations in pp collisions at sqrt(s)=7 TeV. - Aad, G; Abbott, B; Abdallah, J; Abdelalim, A; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, B; et al. (Physical Review Letters, 2011)