permits one to employ the usual diagonal distributions. Consequently, the event rate is computed using one LO distribution and two distinct Next-to-Leading Order (NLO) distributions: MRST2004 and CTEQ6. This second possibility expresses our intention to analyse the impact of the gluon recombination effects in Higgs production at LHC. All these distributions were evolved from an initial momentum $\boldsymbol{k}_{0}^{2} = 1.0\textrm{ GeV}^{2}$, assumed as a mean-value between the initial scales for each parametrization. The results are shown in Fig. \[fig:fig5\] for two different mass ranges, and taking predictions for Tevatron and LHC energies. In the result for LHC, the event rate has a different shape in comparison to the results for Tevatron in virtue of the energy scale. The momentum fraction in Tevatron does not reach the necessary value $x = 0.01$ to permit one to consider the coupling of a gluon ladder to the proton. At most, the momentum fraction in Tevatron achieves $x \approx$ 0.05, when considering the lower bound of the Higgs mass (114.4 GeV [@lep]), which is not enough to employ the unintegrated gluon distribution. This is an important result and reveals the limitations of this approach. Otherwise, this kind of discrepancy is not observed in LHC, 