G. BOZZI (LPSC)
An accurate theoretical prediction of the transverse-momentum (q_T) distribution of the Higgs boson at the LHC can be important to enhance the statistical significance of the signal over the background and to improve strategies for the extraction of the signal. When considering the transverse-momentum distribution of the Higgs boson production it is necessary to separate the small q_T region (q_T << M_H) from the medium and large (q_T > M_H) one, the former being treated by means of resummation techniques of logaritmhically-enhanced contributions and the latter by fixed-order perturbation theory. Then these two approaches have
to be consistently matched to avoid double-counting in the intermediate q_T region. We have implemented soft gluon resummation up to NNLL order and have performed the matching to the corresponding NLO perturbative result. Numerical results have been obtained for the LHC, including a study of non-perturbative contributions, together with a comparison with other resummation studies and the available Monte Carlo event generators.
The main features of the differential distribution turn out to be quite stable
with respect to perturbative uncertainties.