Extending the Standard Model Effective Field Theory with the Complete Set of Dimension-7 Operators
High Energy Physics - Phenomenology
2014-12-30 v2
Abstract
We present a complete list of the independent dimension-7 operators that are constructed using the Standard Model degrees of freedom and are invariant under the Standard Model gauge group. This list contains only 20 independent operators; far fewer than the 63 operators available at dimension 6. All of these dimension-7 operators contain fermions and violate lepton number, and 7 of the 20 violate baryon number as well. This result extends the Standard Model Effective Field Theory (SMEFT) and allows a more detailed exploration of the structure and properties of possible deformations from the Standard Model Lagrangian.
Keywords
Cite
@article{arxiv.1410.4193,
title = {Extending the Standard Model Effective Field Theory with the Complete Set of Dimension-7 Operators},
author = {Landon Lehman},
journal= {arXiv preprint arXiv:1410.4193},
year = {2014}
}
Comments
18 pages, version published in PRD. References added