Speaker
Dr
Thomas Lübbert
(Universität Hamburg)
Description
Transverse momentum spectra of massive bosons at hadron colliders provide important tests of the Standard Model. In the crucial region, where the boson's invariant mass M is much smaller than its transverse momentum qT, the spectra are very sensitive to initial state radiation.
Applying soft-collinear effective theory, a universal framework for its description has been established and the relevant perturbative operators have been extracted up to next-to-next-to leading order (NNLO).
For any heavy color neutral final state, these results enable us to resum logarithms of qT/M beyond next-to-next-to leading logarithmic (NNLL) accuracy and to consistently match to the corresponding NNLO fixed order result. For Drell-Yan, Z, W and H production we implemented this in the program CuTe. As two important examples, we present the qT spectra of Z and H production to NNLO+NN(N)LL accuracy and confront these results with LHC data.
Primary author
Dr
Thomas Lübbert
(Universität Hamburg)
