Possible scenarios for soft and semihard component structure in central hadron-hadron collisions in the TeV region

Three possible scenarios in $\mathrm{hh}$ collisions in the TeV region are discussed in full phase space in the framework of a two-component model. In the first scenario we assume that KNO scaling is achieved independently in the soft and semihard components. In the second one it is proposed that the semihard component violates heavily KNO scaling. The third scenario is a QCD inspired scenario, whose predictions turn out to be intermediate between the previous two. Recent data by E735 experiment favor strong KNO scaling violation and $\log \sqrt{s}$ increase of the average charged multiplicity of the semihard component, resulting in huge minijet production.