We consider within QCD collinear factorization the process p+p → jet+jet+ X, where two forward high-pT jets are produced with a large separation in rapidity y (Mueller-Navelet jets). In this case the (calculable) hard part of the reaction receives large higher-order corrections, which can be accounted for in the BFKL approach. In particular, we calculate in the next-to-leading order the impact factor (vertex) for the production of a forward high-pT jet, in the approximation of small aperture of the jet cone in the pseudorapidity-azimuthal angle plane. The final expression for the vertex turns out to be simple and easy to implement in numerical calculations.

The next-to-leading order forward jet vertex in the small-cone approximation

PAPA, Alessandro
2012-01-01

Abstract

We consider within QCD collinear factorization the process p+p → jet+jet+ X, where two forward high-pT jets are produced with a large separation in rapidity y (Mueller-Navelet jets). In this case the (calculable) hard part of the reaction receives large higher-order corrections, which can be accounted for in the BFKL approach. In particular, we calculate in the next-to-leading order the impact factor (vertex) for the production of a forward high-pT jet, in the approximation of small aperture of the jet cone in the pseudorapidity-azimuthal angle plane. The final expression for the vertex turns out to be simple and easy to implement in numerical calculations.
2012
Next-to-leading order perturbative QCD; Jet production; BFKL approach
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/127533
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