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A fully differential SMEFT analysis of the golden channel using the method of moments

Banerjee, Shankha and Gupta, Rick S. and Ochoa-Valeriano, Oscar and Spannowsky, Michael and Venturini, Elena (2021) 'A fully differential SMEFT analysis of the golden channel using the method of moments.', Journal of High Energy Physics, 2021 (6). 031.


The Method of Moments is a powerful framework to disentangle the relative contributions of amplitudes of a specific process to its various phase space regions. We apply this method to carry out a fully differential analysis of the Higgs decay channel h → 4ℓ and constrain gauge-Higgs coupling modifications parametrised by dimension-six effective operators. We find that this analysis approach provides very good constraints and minimises degeneracies in the parameter space of the effective theory. By combining the decay h → 4ℓ with Higgs-associated production processes, Wh and Zh, we obtain the strongest reported bounds on anomalous gauge-Higgs couplings.

Item Type:Article
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Publisher statement:This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Date accepted:20 May 2021
Date deposited:05 August 2021
Date of first online publication:04 June 2021
Date first made open access:05 August 2021

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