A robust description of hadronic decays in light vector mediator models

Abelian U(1) gauge group extensions of the Standard Model represent one most minimal approaches to solve some urgent particle physics questions and provide a rich phenomenology in various experimental searches. In this work, we focus on baryophilic vector mediator models MeV-to-GeV mass range and, particular, present, for first time, field decays into almost arbitrary hadronic final states. Using only very little theoretical approximations, rigorously follow meson dominance theory our calculations. We study effect total partial decay widths, branching ratios, not least present (future) limits (reach) (for) couplings light particles different models. compare results current literature. Our calculations are publicly available python package compute quantities order describe leptonic as well signatures