Measurement of Dijet Azimuthal Decorrelations in pp Collisions at root s=7 TeV
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KünyeAad, G, Abbott, B., Abdallah, J., Abdelalim, A.A., Abdesselam, A., Abdinov, O. ... ATLAS Collaboration. (2011). Measurement of Dijet Azimuthal Decorrelations in pp Collisions at root s=7 TeV. Physical Review Letters, 106 (27), 17p. http://dx.doi.org/10.1103/PhysRevLett.106.172002.
Azimuthal decorrelations between the two central jets with the largest transverse momenta are sensitive to the dynamics of events with multiple jets. We present a measurement of the normalized differential cross section based on the full data set ( integral Ldt = 36 pb(-1)) acquired by the ATLAS detector during the 2010 root s = 7 TeV proton-proton run of the LHC. The measured distributions include jets with transverse momenta up to 1.3 TeV, probing perturbative QCD in a high-energy regime.