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Abstract
We revisit the azimuthal decorrelation δϕ between a jet and a Z boson produced at hadron colliders. Employing different recombination schemes for the jets leads to significantly different NLL-resummed predictions for the distribution of this quantity. Specifically when the jets are reconstructed with the E-scheme (i.e., four-momentum addition) in the kt or anti-kt clustering algorithms, then the resummation becomes highly non-trivial due to the presence of non-global and/or clustering logarithms. We evaluate these logarithms analytically at two loops and numerically to all orders in the large-Nc limit, and present a full NLL resummation of δϕ. We extend the accuracy of the perturbative expansion of the resummed distribution at fixed order to NNLL accuracy by including
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Details

1 Université de Batna-1, Laboratoire de Physique des Rayonnements et de leurs Intéractions avec la Matière Département de Physique, Faculté des Sciences de la Matière, Batna, Algeria (GRID:grid.440475.6) (ISNI:0000 0004 1771 734X)
2 Université Ahmed Zabana de Relizane, Département de Physique, Faculté des Sciences et Technologies, Relizane, Algeria (GRID:grid.440475.6)