3 papers
hep-ph2026
Explicit Conditions for Diagnosing Tree-Level Unitarity
Jaehoon Jeong, Pyungwon Ko, Yu-Hui Zheng
We explicitly present all coupling conditions required for tree-level unitarity (tree unitarity) in theories with a finite number of massive and massless particles of spin up to 1.…
hep-ph2025
On-Shell Renormalization of Dim-8 SMEFT from Complete Amplitude Basis: I. Four-Fermion Operators
Chao Wu, Ming-Lei Xiao, Jiang-Hao Yu +1
We compute the complete one-loop renormalization group equations (RGEs) for all the four-fermion operators at dimension-8 Standard Model Effective Field Theory (SMEFT). We adopt th…
hep-th2025
Gauged Soft Recursion: On-Shell Construction of Goldstone-Gauge Amplitudes
Ian Low, Ming-Lei Xiao, Yu-Hui Zheng
We present a new on-shell recursion relation for scattering amplitudes involving Nambu-Goldstone bosons with a gauged unbroken symmetry. A central challenge is that gauge interacti…