Automated one-loop computations in the standard model effective field theory
Aug 26, 2020
9 pages
Published in:
- Phys.Rev.D 103 (2021) 9, 096024
- Published: May 25, 2021
e-Print:
- 2008.11743 [hep-ph]
Report number:
- CERN-TH-2020-140,
- CP3-20-42
View in:
Citations per year
Abstract: (APS)
We present the automation of one-loop computations in the standard-model effective field theory at dimension 6. Our general implementation, dubbed smeft@nlo, covers all types of operators: bosonic and two- and four-fermion ones. Included ultraviolet and rational counterterms presently allow for fully differential predictions, possibly matched to the parton shower, up to the one-loop level in the strong coupling or in four-quark operator coefficients. Exact flavor symmetries are imposed among light quark generations, and an initial focus is set on top-quark interactions in the fermionic sector. We illustrate the potential of this implementation with novel loop-induced and next-to-leading-order computations relevant for top-quark, electroweak, and Higgs-boson phenomenology at the LHC and future colliders.Note:
- 6 pages, 3 figures, 4 tables, v2: matches published version, minor changes and new scale choice in four-top-quark production (table II)
- Phenomenological aspects of field theory, general methods
- new physics
- parton: showers
- dimension: 6
- higher-order: 1
- electroweak interaction
- quantum chromodynamics
- effective field theory
- Higgs particle
- top
References(72)
Figures(3)
- [1]
- [2]
- [3]
- [4]
- [4]
- [5]
- [6]
- [7]
- [8]
- [9]
- [10]
- [11]
- [12]
- [13]
- [14]
- [15]
- [16]
- [17]
- [18]
- [19]
- [20]
- [21]
- [22]
- [23]
- [24]