Electroweak radiative corrections to W -boson production at hadron colliders

The complete set of electroweak $O(\ensuremath{\alpha})$ corrections to the Drell-Yan-like production of W bosons is calculated and compared to an approximation provided by the leading term of an expansion about the W-resonance pole. All relevant formulas are listed explicitly, and particular attention is paid to issues of gauge invariance and the instability of the W bosons. A detailed discussion of numerical results underlines the phenomenological importance of the electroweak corrections to W-boson production at the Fermilab Tevatron and at the CERN Large Hadron Collider. While the pole expansion yields a good description of resonance observables, it is not sufficient for the high-energy tail of transverse-momentum distributions, relevant for new-physics searches.

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