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arXiv · 1808.05948

SMEFT Corrections to $Z$ Boson Decays

Sally Dawson·Ahmed Ismail
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Abstract

We compute the one-loop corrections to $Z$ decay properties from dimension-6 operators in the Standard Model Effective Field Theory (SMEFT) that contribute also to anomalous 3-gauge boson couplings and examine the relative sensitivity of the two processes to the anomalous couplings. The size of the contributions is of order a few percent, of the same size as Standard Model electroweak corrections. This is part of a program of computing electroweak quantities to one-loop in the SMEFT: these calculations are needed for a future global fit to limit the coefficients of the dimension-six Wilson coefficients consistently at one loop.

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Sally Dawson, Ahmed Ismail. 2018-11-08. SMEFT Corrections to $Z$ Boson Decays. https://doi.org/10.1103/physrevd.98.093003

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