2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/206256Analysis of semi-inclusive DIS hadroproduction suggests broadening of transverse momentum distributions at $x$ below a few $10^{-3}$, which can be modeled in the Collins-Soper-Sterman formalism by a modification of impact-parameter-dependent parton densities. We discuss the consequences of such a modification for the production of electroweak bosons at hadron-hadron colliders. If substantial small-$x$ broadening is observed in forward Z boson production in the Tevatron Run-2, it will strongly affect predicted transverse momentum distributions for W, Z, and Higgs boson production at the Large Hadron Collider.31 pages, 10 figures; Phys. Rev. D version; amended Introduction, Sections 2.C and 3.B.1; + 1 figureHigh Energy Physics - Phenomenologytext