Effective Field Theory for Nonstandard Top Quark Couplings

Details Effective Field Theory for Nonstandard Top Quark Couplings Effective Field Theory for Nonstandard Top Quark Couplings

2011-04-15

arxiv.org/abs/1104.3122v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 figures

Scientific paper

We present an effective-field-theory calculation of the effect of a dimension-six operator involving the top quark on precision electroweak data via a top-quark loop. We demonstrate the renormalizability, in the modern sense, of the effective field theory. We use the oblique parameter U to bound the coefficient of the operator, and compare with the bound derived from top-quark decay.

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