2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42778W bosons can be produced in the channels e+- p --> W+- + X at HERA thus allowing anomalous trilinear couplings among the gauge bosons to be probed. We discuss the next-to-leading order (NLO) QCD corrections to the photoproduction of W bosons with finite transverse momentum at HERA. The higher-order QCD corrections reduce the factorization scale dependence significantly and modify the leading-order (LO) cross sections by +- O(10%).5 pages, 2 figures, contributed to XI International Workshop on Deep Inelastic Scattering (DIS2003), April 23-27, St. Petersburg, RussiaHigh Energy Physics - Phenomenologytext