Renormalization group evolution of the universal theories EFT

doi:10.1007/JHEP06(2016)122

Title: Renormalization group evolution of the universal theories EFT

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Abstract

The conventional oblique parameters analyses of precision electroweak data can be consistently cast in the modern framework of the Standard Model effective field theory (SMEFT) when restrictions are imposed on the SMEFT parameter space so that it describes universal theories. However, the usefulness of such analyses is challenged by the fact that universal theories at the scale of new physics, where they are matched onto the SMEFT, can flow to nonuniversal theories with renormalization group (RG) evolution down to the electroweak scale, where precision observables are measured. The departure from universal theories at the electroweak scale is not arbitrary, but dictated by the universal parameters at the matching scale. But to define oblique parameters, and more generally universal parameters at the electroweak scale that directly map onto observables, additional prescriptions are needed for the treatment of RG-induced nonuniversal effects. Finally, we perform a RG analysis of the SMEFT description of universal theories, and discuss the impact of RG on simplified, universal-theories-motivated approaches to fitting precision electroweak and Higgs data.

Authors:

Wells, James D. ^[1]; Zhang, Zhengkang ^[1]

Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics. Michigan Center for Theoretical Physics

Publication Date:: 2016-06-21

Research Org.:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1326983

Grant/Contract Number:: SC0007859

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 6; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; effective field theories; renormalization group; beyond standard model; Higgs physics

Citation Formats


                    Wells, James D., and Zhang, Zhengkang. Renormalization group evolution of the universal theories EFT.  United States: N. p., 2016. 
        Web.  doi:10.1007/JHEP06(2016)122.

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                    Wells, James D., & Zhang, Zhengkang. Renormalization group evolution of the universal theories EFT.  United States.  doi:10.1007/JHEP06(2016)122.

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                    Wells, James D., and Zhang, Zhengkang. Tue .  
        "Renormalization group evolution of the universal theories EFT".  United States.  doi:10.1007/JHEP06(2016)122.  https://www.osti.gov/servlets/purl/1326983.

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@article{osti_1326983,

  title        = {Renormalization group evolution of the universal theories EFT},

  author       = {Wells, James D. and Zhang, Zhengkang},

  abstractNote = {The conventional oblique parameters analyses of precision electroweak data can be consistently cast in the modern framework of the Standard Model effective field theory (SMEFT) when restrictions are imposed on the SMEFT parameter space so that it describes universal theories. However, the usefulness of such analyses is challenged by the fact that universal theories at the scale of new physics, where they are matched onto the SMEFT, can flow to nonuniversal theories with renormalization group (RG) evolution down to the electroweak scale, where precision observables are measured. The departure from universal theories at the electroweak scale is not arbitrary, but dictated by the universal parameters at the matching scale. But to define oblique parameters, and more generally universal parameters at the electroweak scale that directly map onto observables, additional prescriptions are needed for the treatment of RG-induced nonuniversal effects. Finally, we perform a RG analysis of the SMEFT description of universal theories, and discuss the impact of RG on simplified, universal-theories-motivated approaches to fitting precision electroweak and Higgs data.},

  doi          = {10.1007/JHEP06(2016)122},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 6,

  volume       = 2016,

  place        = {United States},

  year         = {2016},

  month        = {6}

}

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DOI: 10.1007/JHEP06(2016)122

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