Radiative corrections to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>W</mml:mi></mml:math>-boson hadroproduction: Higher-order electroweak and supersymmetric effects

Abstract

The high accuracy envisaged for future measurements of $W$-boson production at hadron colliders has to be matched by precise theoretical predictions. We study the impact of electroweak radiative corrections on $W$-boson production cross sections and differential distributions at the Tevatron and at the LHC. In particular, we include photon-induced processes, which contribute at $\mathcal{O}(\ensuremath{\alpha})$, and leading radiative corrections beyond $\mathcal{O}(\ensuremath{\alpha})$ in the high-energy Sudakov regime and from multiphoton final-state radiation. We furthermore present the calculation of the complete supersymmetric next-to-leading-order electroweak and QCD corrections to $W$-boson hadroproduction within the minimal supersymmetric standard model. The supersymmetric corrections turn out to be negligible in the vicinity of the $W$ resonance in general, reaching the percent level only at high lepton transverse momentum and for specific choices of the supersymmetric parameters.