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Effective field theories in Rξ gauges

A preprint version of the article is available at arXiv.

Abstract

In effective quantum field theories, higher dimensional operators can affect the canonical normalization of kinetic terms at tree level. These contributions for scalars and gauge bosons should be carefully included in the gauge fixing procedure, in order to end up with a convenient set of Feynman rules. We develop such a setup for the linear Rξ-gauges. It involves a suitable reduction of the operator basis, a generalized gauge fixing term, and a corresponding ghost sector. Our approach extends previous results for the dimension-six Standard Model Effective Field Theory to a generic class of effective theories with operators of arbitrary dimension.

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ArXiv ePrint: 1812.11513

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Misiak, M., Paraskevas, M., Rosiek, J. et al. Effective field theories in Rξ gauges. J. High Energ. Phys. 2019, 51 (2019). https://doi.org/10.1007/JHEP02(2019)051

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Keywords

  • Effective Field Theories
  • Gauge Symmetry
  • Spontaneous Symmetry Breaking