since the necessary value of momentum fraction can be easily achieved. Another important feature observed in LHC is the difference between the LO and NLO distributions. In this energy scale, the contributions from the recombination effects take place and reveal its importance to correctly predict the cross sections. Having a smaller energy compared to LHC, the Tevatron do not show the same evidence. Further information about the Higgs production and better knowledge on the recombination effects in QCD should be obtained in the future data from LHC. As made before in the LHC predictions, the mass range is extended in order to observe the role of the Sudakov form factors, showing the same behavior for all parametrizations.

An analysis must be done to verify the sensitivity of the results to the cut in the momentum integration, for that the event rate is calculated for some values of the cut, as shown in Fig. \[fig:fig6\]. There is a significative difference between the results of Tevatron and LHC, where the contributions to the event rate have very distinct behaviors as the cut value varies. This comparison shows that there is a smaller contribution to the event rate in LHC for higher cut 