Abstract
It was shown recently that standard resummation of logarithms of Q/pT can be supplemented with the resummation of logarithmic contributions at large x = Q2/s in the case of a colourless final state such as Higgs produced via gluon fusion or the production of a lepton pair via Drell–Yan mechanism. Such an improved transverse momentum resummation takes into account soft emissions that are emitted at very small angles. We report on recent phenomenological studies of a combined threshold-improved pT and threshold resummation formalism to the Higgs boson produced at the LHC where small-pT and threshold logarithms are resummed up to NNLL and NNLL* respectively. We show that the effect of the modified pT resummation yields a faster perturbative convergence in the small-pT region while the effect of the threshold one improves the agreement with fixed-order calculations in the medium and large-pT regions.
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