2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/126166Presented here is a technique of propagating uncertainties through the parton shower by means of an alternate event weight. This technique provides a mechanism to systematically quantify the effect of variations of certain components of the parton shower leading to a novel approach to probing the physics implemented in a parton shower code and understanding its limitations. Further, this approach can be applied to a large class of parton shower algorithms and requires no changes to the underlying implementation.19 pagesHigh Energy Physics - Phenomenologytext