title: Reweighing the evidence for a light Higgs boson in dileptonic W boson decays.
abstract: We reconsider observables for discovering and measuring the mass of a Higgs boson via its dileptonic decays h → W W* → ℓνℓν. We define an observable generalizing the transverse mass that takes into account the fact that one of the intermediate W bosons is likely to be on shell. We compare this new variable with existing ones and argue that it gives a significant improvement for discovery in the region mh < 2 mW.
authors.affiliation: Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom. a.barr@physics.ox.ac.uk
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Barr
authors.forename: Ben
authors.initials: B
authors.lastname: Gripaios
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Lester