EWPD in the SMEFT to dimension eight

A bstract We calculate the O H † H 2 / Λ 4 corrections to LEP electroweak precision data using the geometric formulation of the Standard Model Effective Field Theory (SMEFT). We report our results in simple-to-use interpolation tables that allow the interpretation of this data set to dimension eight...

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Published in:The journal of high energy physics Vol. 2021; no. 6; pp. 1 - 42
Main Authors: Corbett, Tyler, Helset, Andreas, Martin, Adam, Trott, Michael
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2021
Springer Nature B.V
Springer Nature
SpringerOpen
Subjects:
Beyond Standard Model
Classical and Quantum Gravitation
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Effective Field Theories
Electroweak model
Elementary Particles
Error analysis
Error correction
Field theory
High energy physics
Interpolation
Model matching
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Effective Field Theories
Beyond Standard Model
ISSN:1029-8479, 1029-8479
Online Access:Get full text
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Summary:A bstract We calculate the O H † H 2 / Λ 4 corrections to LEP electroweak precision data using the geometric formulation of the Standard Model Effective Field Theory (SMEFT). We report our results in simple-to-use interpolation tables that allow the interpretation of this data set to dimension eight for the first time. We demonstrate the impact of these previously unknown terms in the case of a general analysis in the SMEFT, and also in the cases of two distinct models matched to dimension eight. Neglecting such dimension-eight corrections to LEP observables introduces a theoretical error in SMEFT studies. We report some preliminary studies defining such a theory error, explicitly demonstrating the effect of previously unknown dimension-eight SMEFT corrections on LEP observables.
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USDOE Office of Science (SC)
National Science Foundation (NSF)
SC0011632; PHY-1230860
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP06(2021)076