Dijet correlations in $pp$ collisions at RHIC
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We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for dijet correlations in proton-proton collisions at RHIC energies. We discuss correlations in azimuthal angle as well as correlations in two-dimensional space of transverse momenta of two jets. Some $k_t$-factorization subprocesses are included for the first time in the literature. Different unintegrated gluon/parton distributions are used in the $k_t$-factorization approach. The results depend on UGDF/UPDF used. Limitations due to leading jet condition are discussed.
11 pages, 23 figures, a talk presented at International Workshop on High-pT physics at LHC, Jyvaskyla, Finland, March 23-27 2007
11 pages, 23 figures, a talk presented at International Workshop on High-pT physics at LHC, Jyvaskyla, Finland, March 23-27 2007