Paper
The aT distribution of the Z boson at hadron colliders
Authors
Abstract
We provide the first theoretical study of a novel variable, , proposed in Ref.[1] as a more accurate probe of the region of low transverse momentum , for the boson distribution at hadron colliders. The is the component of transverse to a suitably defined axis. Our study involves resummation of large logarithms in up to the next-to--leading logarithmic accuracy and we compare the results to those for the well-known distribution, identifying important physical differences between the two cases. We also test our resummed result at the two-loop level by comparing its expansion to order with the corresponding fixed-order results and find agreement with our expectations.