We study the resummation of large logarithmic perturbative corrections to the partonic cross sections relevant for dihadron production in hadronic collisions, $H_1{H}_2\to h_1{h}_{2}X$, at high invariant mass of the produced hadron pair. These corrections arise near the threshold for the partonic reaction and are associated with soft-gluon emission. We perform the resummation to next-to-leading logarithmic accuracy, and show how to incorporate consistently cuts in rapidity and transverse momentum of the observed particles. We present numerical results for fixed-target and ISR regimes and find enhancements over the next-to-leading order cross section, which significantly improve the agreement between theoretical predictions and data.

• Received 8 July 2009

DOI:https://doi.org/10.1103/PhysRevD.80.074016