Theoretical developments in the SMEFT at dimension-8 and beyond
Abstract
In this contribution to the Snowmass 2021 process we review theoretical developments in the Standard Model Effective Field Theory (SMEFT) with a focus on effects at the dimension-8 level and beyond. We review the theoretical advances that led to the complete construction of the operator bases for the dimension-8 and dimension-9 SMEFT Lagrangians. We discuss the possibility of obtaining all-orders results in the expansion for certain SMEFT observables as well as the current status of renormalization group running and implications for positivity, and briefly present the on-shell approach to constructing SMEFT amplitudes. Finally we present several new phenomenological effects that first arise at dimension-8 and discuss the impact of these terms on experimental analyses.
Keywords
Cite
@article{arxiv.2203.06771,
title = {Theoretical developments in the SMEFT at dimension-8 and beyond},
author = {Simone Alioli and Radja Boughezal and Weiguang Cao and Mikael Chala and Álvaro Díaz-Carmona and Supratim Das Bakshi and Gauthier Durieux and Lukáš Gráf and Guilherme Guedes and Brian Quinn Henning and Teppei Kitahara and Hao-Lin Li and Xiaochuan Lu and Camila S. Machado and Adam Martin and Tom Melia and Emanuele Mereghetti and Hitoshi Murayama and Christopher W. Murphy and Jasper Roosmale Nepveu and Sridip Pal and Frank Petriello and Yael Shadmi and Jing Shu and Yaniv Weiss and Ming-Lei Xiao and Jiang-Hao Yu},
journal= {arXiv preprint arXiv:2203.06771},
year = {2022}
}
Comments
37 pages, 6 figures; contribution to Snowmass 2021; new section and additional authors