Re-weighing the evidence for a Higgs boson in dileptonic W-boson decays
Alan J. Barr, Ben Gripaios, Christopher G. Lester
TL;DR
This paper introduces a new observable for detecting and measuring the Higgs boson in dileptonic W-boson decays, improving sensitivity especially when the Higgs mass is below twice the W-boson mass.
Contribution
A generalized transverse mass variable is proposed, accounting for on-shell W-bosons, enhancing discovery potential over existing methods.
Findings
New variable outperforms existing observables in simulations.
Significant improvement for Higgs mass below 2 m_W.
Enhanced sensitivity in Higgs search channels.
Abstract
We reconsider observables for discovering and measuring the mass of a Higgs boson via its di-leptonic decays: H --> WW* --> l nu l nu. 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 m_h < 2 m_W.
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