NLO production of W' bosons at hadron colliders using the MC@NLO and POWHEG methods

Abstract

We present a next-to-leading order (NLO) treatment of the production of a new charged heavy vector boson, generically called W', at hadron colliders via the Drell-Yan process. We fully consider the interference effects with the Standard Model W boson and allow for arbitrary chiral couplings to quarks and leptons. We present results at both leading order (LO) and NLO in QCD using the MC@NLO/Herwig++ and POWHEG methods. We derive theoretical observation curves on the mass-width plane for both the LO and NLO cases at different collider luminosities. The event generator used, Wpnlo, is fully customisable and publicly available.

26 pages. Published in JHEP. Includes more complete description of the NLO calculation and matching to the parton shower. Also includes full NLO mass-width reach study, more detailed discussion of NLO/LO differences and wider range of observables

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• NLO+NLL limits on W' and Z' gauge boson masses in general extensions of the Standard Model
• LHC phenomenology of general SU(2)xSU(2)xU(1) models
• Charge asymmetry ratio as a probe of quark flavour couplings of resonant particles at the LHC
• Signal-background interference for digluon resonances at the Large Hadron Collider