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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Acknowledgments
We are particularly grateful to F. Bishara, P. Englert, C. Grojean and G. Panico for allowing us to reuse the simulations and analysis techniques from ref. [32] and to J. Gaunt for discussions on the method of regions and comments on the relevant parts of the manuscript. We thank H. El Faham, C. Severi, E. Salvioni, T. McKelvey, and C. Englert for useful discussions and C. Grojean and G. Panico for their comments on an early version of this manuscript. A.R. and E.V. work is supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant agreement No. 949451). A.R., M.T., and E.V. are supported by a Royal Society University Research Fellowship through grant URF/R1/201553. We thank DESY Theory Group for allowing us to use their computational resources for this project.
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Rossia, A.N., Thomas, M.O.A. & Vryonidou, E. Diboson production in the SMEFT from gluon fusion. J. High Energ. Phys. 2023, 132 (2023). https://doi.org/10.1007/JHEP11(2023)132
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DOI: https://doi.org/10.1007/JHEP11(2023)132