Dmitry Yu. Ivanov, Alessandro Papa
We consider within QCD collinear factorization the process p+p to jet + jet
+X, where two forward high-$p_T$ jets are produced with a large separation in
rapidity $\Delta y$ (Mueller-Navelet jets). In this case the (calculable) hard
part of the reaction receives large higher-order corrections $\sim
\alpha^n_s\ln^n \Delta y$, 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-$p_T$ 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.
View original:
http://arxiv.org/abs/1202.1082
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