Effective field theory of precision electroweak physics at one loop

Mebane, Harrison;Greiner, Nicolas;Zhang, Cen;Willenbrock, Scott
(2013) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 724, n° 4-5, p. 259-263 (2013)

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Authors
  • Mebane, HarrisonDepartment of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, United States
    Author
  • Greiner, NicolasDepartment of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, United States
    Author
  • Zhang, CenUCLouvain
    Author
  • Willenbrock, ScottDepartment of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, United States
    Author
Abstract
The one loop effects of two dimension-six operators on gauge boson self-energies are computed within an effective field theory framework. These self-energies are translated into effects on precision electroweak observables, and bounds are obtained on the operator coefficients. The effective field theory framework allows for the divergences that arise in the loop calculations to be properly handled, and for unambiguous bounds on the coefficients to be obtained. We find that the coefficients are only weakly bounded, in contrast to previous calculations that obtained much stronger bounds. We argue that the results of these previous calculations are specious. © 2013 Elsevier B.V.
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Mebane, H., Greiner, N., Zhang, C., & Willenbrock, S. (2013). Effective field theory of precision electroweak physics at one loop. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 724(4-5), 259-263. https://doi.org/10.1016/j.physletb.2013.06.021 (Original work published 2013)