Tuesday, April 16, 2013

1304.3549 (M. A. Nefedov et al.)

Dijet azimuthal decorrelations at the LHC in the parton Reggeization
approach
   [PDF]

M. A. Nefedov, V. A. Saleev, A. V Shipilova
We study inclusive dijet azimuthal decorrelations in proton-proton collisions at the CERN LHC invoking the hypothesis of parton Reggeization in t-channel exchanges at high energies. In the parton Reggeization approach, the main contribution to the azimuthal angle difference between the two most energetic jets is due to the Reggeon-Reggeon-Particle-Particle scattering, when the fusion of two Reggeized gluons into a pair of Yang-Mills gluons dominates. Using a high-energy factorization scheme with the Kimber-Martin-Ryskin unintegrated parton distribution functions and the Fadin-Lipatov effective vertices we obtain good agreement of our calculations with recent measurements by the ATLAS and CMS Collaborations at the CERN LHC.
View original: http://arxiv.org/abs/1304.3549

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