A program to compute the Higgs boson transverse momentum spectrum,
d^{2} &sigma/(dp_{T} dy),
at Next-to-Leading order (NLO) in QCD at hadronic colliders.
The production occurs via the top-quark loop diagram in the limit of
infinite top mass. Note that the computation is at non-zero p_{T}
so that the leading order (LO) contribution to the distribution is at
&alpha_{s}^{3}.
The program may also be used to compute the LO distribution
for finite top quark mass. See Ref. [1] for details and results.
The distribution contains two distinct versions of the code:
HiggsPt is the basic version for producing
the transverse momentum distribution at fixed rapidity or the rapidity
distribution at fixed transverse momentum. A second version
HiggsPt_R produces output for use in
the transverse momentum resummation program RESBOS [2], on a grid in
Higgs mass, rapidity, and transverse momentum.
The program uses the LHAPDF (Les Houches Accord PDF) interface to access various
up-to-date parton distribution function sets. More information on downloading
the LHAPDF libraries and the various PDF sets can be found at
http://hepforge.cedar.ac.uk/lhapdf/.