Regular Article - Theoretical Physics
SMEFT analysis of vector boson scattering and diboson data from the LHC Run II
Department of Physics and Astronomy, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands
2 Nikhef Theory Group, Science Park 105, 1098 XG, Amsterdam, The Netherlands
3 Dipartimento di Fisica, INFN Sezione di Milano Bicocca, Universita degli Studi di Milano Bicocca, Milan, Italy
4 Institute for Particle Physics Phenomenology, Durham University, South Road, DH1 3LE, Durham, UK
Accepted: 17 June 2021
Published online: 29 June 2021
We present a systematic interpretation of vector boson scattering (VBS) and diboson measurements from the LHC in the framework of the dimension-six standard model effective field theory (SMEFT). We consider all available measurements of VBS fiducial cross-sections and differential distributions from ATLAS and CMS, in most cases based on the full Run II luminosity, and use them to constrain 16 independent directions in the dimension-six EFT parameter space. Compared to the diboson measurements, we find that VBS provides complementary information on several of the operators relevant for the description of the electroweak sector. We also quantify the ultimate EFT reach of VBS measurements via dedicated projections for the high luminosity LHC. Our results motivate the integration of VBS processes in future global SMEFT interpretations of particle physics data.
© The Author(s) 2021
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