NNLO soft function for electroweak boson production at large transverse momentum
arXiv:1201.5572 · doi:10.1007/JHEP04(2012)034
Abstract
The soft function relevant for the production of an electroweak boson (photon, W, Z or H) with large transverse momentum at a hadron collider is computed at next-to-next-to-leading order. This is the first two-loop computation of a soft function involving three light-cone directions. With the result, the threshold resummation for these processes can now be performed at next-to-next-to-next-to-leading logarithmic accuracy.
16 pages, 3 figures