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arXiv · 1602.05202

Pushing Higgs Effective Theory over the Edge

Anke Biekötter·Johann Brehmer·Tilman Plehn
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Abstract

Based on a vector triplet model we study a possible failure of dimension-6 operators in describing LHC Higgs kinematics. First, we illustrate that including dimension-6 contributions squared can significantly improve the agreement between the full model and the dimension-6 approximation, both in associated Higgs production and in weak-boson-fusion Higgs production. Second, we test how a simplified model with an additional heavy scalar could improve the agreement in critical LHC observables. In weak boson fusion we find an improvement for virtuality-related observables at large energies, but at the cost of sizeable deviations in interference patterns and angular correlations.

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Anke Biekötter, Johann Brehmer, Tilman Plehn. 2016-02-16. Pushing Higgs Effective Theory over the Edge. https://doi.org/10.1103/physrevd.94.055032

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