Constraints on Electroweak Effective Operators at One Loop

2013/06/14 by Harrison Mebane, Nicolas Greiner, Mebane, Harrison +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1306.3380

15 pages

arxiv created 2013/07/22 · arxiv updated 2013/07/24

Abstract

We derive bounds on nine dimension-six operators involving electroweak gauge bosons and the Higgs boson from precision electroweak data. Four of these operators contribute at tree level, and five contribute only at one loop. Using the full power of effective field theory, we show that the bounds on the five loop-level operators are much weaker than previously claimed, and thus much weaker than bounds from tree-level processes at high-energy colliders.

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