@misc{10481/92411,
year = {2024},
month = {3},
url = {https://hdl.handle.net/10481/92411},
abstract = {We discuss the structure of the mixing among dimension-eight operators in the Standard Model effective
field theory relying on the positivity of two-to-two forward scattering amplitudes. We uncover tens of new
nontrivial zeros as well as hundreds of terms with definite sign in (a particular basis of) the corresponding
anomalous dimension matrix. We highlight that our results are not immediately apparent from the Feynman
diagrammatic perspective, nor from on-shell amplitude methods. As a by-product of this work, we provide
positivity bounds not previously derived in the literature, as well as explicit values of certain elements of the
anomalous dimension matrix that serve as a cross-check of our results.},
organization = {Ramón y Cajal Grant No. RYC2019-027155-I funded by the MCIN /AEI/10.13039/501100011033 and by “El FSE invierte en tu futuro”},
organization = {Grant No. CNS2022-136024 funded by the European Union NextGenerationEU/PRTR},
organization = {Grants No. PID2021-128396NB-I00 and
No. PID2022-139466NB-C22 funded by “FEDER Una
manera de hacer Europa”},
organization = {Junta de
Andalucía Grants FQM 101 and P21-00199},
organization = {National Natural Science
Foundation of China under Grant No. 11835013},
publisher = {American Physical Society},
title = {Positivity restrictions on the mixing of dimension-eight SMEFT operators},
doi = {10.1103/PhysRevD.109.065015},
author = {Rodríguez Chala, Mikael and Li, Xue Zeng},
}