Low-energy effective field theory below the electroweak scale: operators and matching
By E. Jenkins, A. Manohar, P. Stoffer. Journal of High Energy Physics, 2017
311 citations recorded by the source corpus.
The gauge-invariant operators up to dimension six in the low-energy effective field theory below the electroweak scale are classified. There are 70 Hermitian dimension-five and 3631 Hermitian dimension-six operators that conserve baryon and lepton number, as well as ΔB = ±ΔL = ±1, ΔL = ±2, and ΔL = ±4 operators. The matching onto these operators from the Standard Model Effective Field Theory (SMEFT) up to order 1/Λ2 is computed at tree level. SMEFT imposes constraints on the coefficients of the low-energy effective theory, which can be checked experimentally to determine whether the electroweak gauge symmetry is broken by a single fundamental scalar doublet as in SMEFT. Our results, when combined with the one-loop anomalous dimensions of the low-energy theory and the one-loop anomalous dimensions of SMEFT, allow one to compute the low-energy implications of new physics to leading-log accuracy, and combine them consistently with high-energy LHC constraints.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/29db607d17dc1c0b7576a1b60784e4f7f225ad29
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Citations in the corpus
- B-decay discrepancies after Moriond 2019 (2019, result): “Using the tree-level matching conditions from SMEFT onto WET [96, 97], we have checked that these results are consistent with the findings in [77].”
- General neutrino interactions from an effective field theory perspective (2019, background): “This has been performed in [3] including all possible operators below the weak scale.”
- A global likelihood for precision constraints and flavour anomalies (2018, methodology): “Thanks to the calculation of the complete one-loop SMEFT RGEs [6–9], the complete matching from SMEFT onto WET [10, 11] and the complete one-loop QCD and QED RGEs within WET [12, 13] that have been incorporated in the public code wilson [14] leveraging the open Wilson coefficient exchange format (WC”