Effective field theory of precision electroweak physics at one loop

Harrison Mebane, Nicolas Greiner, Cen Zhang, Scott Willenbrock

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)259-263
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume724
Issue number4-5
DOIs
StatePublished - Jul 23 2013

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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