TY - JOUR

T1 - Effective field theory of precision electroweak physics at one loop

AU - Mebane, Harrison

AU - Greiner, Nicolas

AU - Zhang, Cen

AU - Willenbrock, Scott

N1 - Funding Information:
This material is based upon work supported in part by the US Department of Energy under contract No. DE-FG∅2-13ER 42 ∅ ∅ 1 and the IISN “Fundamental Interactions” convention 4.4517.08 . Appendix A

PY - 2013/7/23

Y1 - 2013/7/23

N2 - 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.

AB - 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.

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U2 - 10.1016/j.physletb.2013.06.021

DO - 10.1016/j.physletb.2013.06.021

M3 - Article

AN - SCOPUS:84880261267

VL - 724

SP - 259

EP - 263

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 4-5

ER -