Hard inclusive production of a pair of rapidity-separated hadrons in proton collisions

Abstract

We discuss the process $p+p\to h_1+h_2+X$, where the identified hadrons $h_1$ and $h_2$ have large transverse momenta and are produced in high-energy proton-proton collisions with a large rapidity gap between them. In this case the (calculable) hard part of the reaction receives large higher order corrections $\sim {\alpha }_s^n{\ln }^n\Delta y$, which can be accounted for in the BFKL approach. Specifically, we describe in the next-to-leading order the calculation of the vertex (impact-factor) for the inclusive production of the identified hadron.

Comments: 8 pages, 5 figures; contribution to the proceedings of "Low-x 2011" - Santiago de Compostela (Spain), June 3-7, 2011