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Title: Covariant diagrams for one-loop matching

Journal Article · · Journal of High Energy Physics (Online)
 [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Michigan Center for Theoretical Physics (MCTP); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

Here, we present a diagrammatic formulation of recently-revived covariant functional approaches to one-loop matching from an ultraviolet (UV) theory to a low-energy effective field theory. Various terms following from a covariant derivative expansion (CDE) are represented by diagrams which, unlike conventional Feynman diagrams, involve gauge-covariant quantities and are thus dubbed "covariant diagrams." The use of covariant diagrams helps organize and simplify one-loop matching calculations, which we illustrate with examples. Of particular interest is the derivation of UV model-independent universal results, which reduce matching calculations of specific UV models to applications of master formulas. We also show how such derivation can be done in a more concise manner than the previous literature, and discuss how additional structures that are not directly captured by existing universal results, including mixed heavy-light loops, open covariant derivatives, and mixed statistics, can be easily accounted for.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0007859
OSTI ID:
1389267
Journal Information:
Journal of High Energy Physics (Online), Vol. 2017, Issue 5; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 61 works
Citation information provided by
Web of Science

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Integrating out heavy particles with functional methods: a simplified framework text January 2016

Cited By (14)

Hilbert series and plethystics: paving the path towards 2HDM- and MLRSM-EFT journal September 2019
Standard model parameters in the tadpole-free pure MS ¯ scheme journal October 2019
Effective action for gauge bosons journal January 2019
Extending the universal one-loop effective action by regularization scheme translating operators text January 2018
On the future of Higgs, electroweak and diboson measurements at lepton colliders text January 2019
HEPfit: a Code for the Combination of Indirect and Direct Constraints on High Energy Physics Models text January 2020
HEPfit: a code for the combination of indirect and direct constraints on high energy physics models journal May 2020
Completing the scalar and fermionic universal one-loop effective action text January 2020
On the future of Higgs, electroweak and diboson measurements at lepton colliders text January 2019
One-loop Matching and Running with Covariant Derivative Expansion preprint January 2016
Compilation of low-energy constraints on 4-fermion operators in the SMEFT text January 2017
Extending the Universal One-Loop Effective Action: Heavy-Light Coefficients text January 2017
Complete One-Loop Matching for a Singlet Scalar in the Standard Model EFT text January 2018
Hilbert Series and Plethystics: Paving the path towards 2HDM- and MLRSM-EFT text January 2019

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