Capping the positivity cone: dimension-8 Higgs operators in the SMEFT

• Published in: The journal of high energy physics Vol. 2024; no. 3; pp. 180 - 47
• Main Authors: Chen, Qing, Mimasu, Ken, Wu, Tong Arthur, Zhang, Guo-Dong, Zhou, Shuang-Yong
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 29.03.2024; Springer Nature B.V; SpringerOpen
• Subjects: Classical and Quantum Gravitation; Effective Field Theories; Elementary Particles; Operators; Physics; Physics and Astronomy; Principles; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; S matrix theory; SMEFT; Specific BSM Phenomenology; String Theory; Upper bounds; Effective Field Theories; SMEFT; Specific BSM Phenomenology

A bstract SMEFT Wilson coefficients are subject to various positivity bounds in order to be consistent with the fundamental principles of S-matrix. Previous bounds on dimension-8 SMEFT operators have been obtained using the positivity part of UV partial wave unitarity and form a (projective) convex...