Dijet and photon-jet correlations in proton-proton collisions at RHIC

We discuss correlations in azimuthal angle as well as correlations in two-dimensional space of transverse momenta of two jets as well as photon and jet. 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. The collinear NLO

2 \to 3

contributions dominate over

k_t

-factorization cross section at small relative azimuthal angles as well as for asymmetric transverse momentum configurations.

Note:

an invited talk at the Memorial Workshop on Hadronic and Quark Matter devoted to J.Zimanyi, Budapest, July 2-4, 2007

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Figures(20)

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