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arXiv · 2306.09963

Diboson production in the SMEFT from gluon fusion

Alejo N. Rossia·Marion O. A. Thomas·Eleni Vryonidou
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Abstract

Precision measurements of diboson production at the LHC is an important probe of the limits of the Standard Model. The gluon-fusion channel of this process offers a connection between the Higgs and top sectors. We study in a systematic way gluon-induced diboson production in the Standard Model Effective Field Theory. We compute the amplitudes of double Higgs, double $Z/W$ and associated $ZH$ production at one loop and with up to one insertion of a dimension-6 operator. We study their high-energy limit and identify to which operators each channel could be most sensitive. To illustrate the relevance of these processes, we perform a phenomenological study of associated $ZH$ production. We show that for some top operators the gluon-induced channel can offer competitive sensitivity to constraints obtained from top quark production processes.

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Alejo N. Rossia, Marion O. A. Thomas, Eleni Vryonidou. 2023-06-16. Diboson production in the SMEFT from gluon fusion. https://doi.org/10.1007/jhep11(2023)132

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