NLO inclusive jet production inkT-factorization

Bartels, Jochen; Vera, A. Sabio; Schwennsen, F.

doi:10.1088/1126-6708/2006/11/051

Cited by 47 publications

(51 citation statements)

References 20 publications

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“…The factor A has been rederived recently in Ref. [24] and the result of Leonidov and Ostrovsky was confirmed. Please note a different convention of UGDF in our paper (F ) with those in Refs.…”

Section: Appendicesmentioning

confidence: 78%

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Dijet correlations at BNL RHIC: Leading-orderkt-factorization approach versus next-to-leading order collinear approach

2007

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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. For collinear NLO case the situation depends significantly on whether we consider correlations of any two jets or correlations of leading jets only. In the first case the 2 → 2 contributions associated with soft radiations summed up in the k t -factorization approach dominate at φ ∼ π and at equal moduli of jet transverse momenta. The collinear NLO 2 → 3 contributions dominate over k t -factorization cross section at small relative azimuthal angles as well as for asymmetric transverse momentum configurations. In the second case the NLO contributions vanish at small relative azimuthal angles and/or large jet transverse-momentum disbalance due to simple kinematical constraints. There are no such limitations for the k t -factorization approach. All this makes the two approaches rather complementary. The role of several cuts is discussed and quantified.

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Section: Appendicesmentioning

confidence: 78%

“…Only first two were included recently in the k t -factorization approach [17,24]. The papers in the literature have been concentrated on large energies, i.e.…”

Section: Resultsmentioning

confidence: 99%

Dijet correlations at BNL RHIC: Leading-orderkt-factorization approach versus next-to-leading order collinear approach

2007

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“…It is the sub-leading n = 1 term that is responsible for the azimuthal correlations at large y T − y A . Thus, we use an approximation G ≈ 2[G 0 + G 1 cos(q 1 ·q 2 )] with G 0 and G 1 given by (23). This is the same approximation that was employed in [10].…”

Section: Correlations At |Ymentioning

confidence: 99%

“…In this approximation, the 2 → 4 amplitudes were calculated for an arbitrary ∆y (quasi multi-Regge kinematics, QMRK) in [24][25][26]28] for gg → ggqq and in [22,23,27] for gg → gggg processes. The corresponding result is given by (10)- (13).…”

Section: Introductionmentioning

confidence: 99%

Rapidity and centrality dependence of azimuthal correlations in deuteron–Gold collisions at RHIC

Tuchin

2010

Nuclear Physics A

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“…Our results improve with respect to the LO BFKL predictions but show too much azimuthal angle decorrelation. The LHC at CERN will have larger rapidity differences and will be a very useful tool to investigate the importance of BFKL effects in multijet production [14].…”

Section: Discussionmentioning

confidence: 99%