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RESEARCH PRODUCT
Higgs boson self-coupling measurements using ratios of cross sections
Andreas PapaefstathiouLi Lin YangJose ZuritaFlorian Goertzsubject
PhysicsCouplingNuclear and High Energy PhysicsParticle physicsLarge Hadron Collider530 Physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFOS: Physical sciencesObservableProbability density functionParton10192 Physics Institute01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - PhenomenologyHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesScale variationHiggs bosonHigh Energy Physics::Experiment3106 Nuclear and High Energy PhysicsHiggs Physics; Standard Model010306 general physicsdescription
We consider the ratio of cross sections of double-to-single Higgs boson production at the Large Hadron Collider at 14 TeV. Since both processes possess similar higher-order corrections, leading to a cancellation of uncertainties in the ratio, this observable is well-suited to constrain the trilinear Higgs boson self-coupling. We consider the scale variation, parton density function uncertainties and conservative estimates of experimental uncertainties, applied to the viable decay channels, to construct expected exclusion regions. We show that the trilinear self-coupling can be constrained to be positive with a 600/fb LHC dataset at 95% confidence level. Moreover, we demonstrate that we expect to obtain a ~+30% and ~-20 uncertainty on the self-coupling at 3000/fb without statistical fitting of differential distributions. The present article outlines the most precise method of determination of the Higgs trilinear coupling to date.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-06-01 | Journal of High Energy Physics |