We propose the ``naive" T-odd Collins-Soper moments in the Drell-Yan process as probes of previously unexplored directions in the Standard Model Effective Field Theory (SMEFT) parameter space. We show that the moments A6 and A7 in the high invariant mass and transverse momentum region are sensitive to dimension-8 CP-odd semi-leptonic four-fermion operators with an additional gluon field strength tensor. Using the projected integrated luminosity of a future high-luminosity LHC, we show that effective ultraviolet scales in the few-TeV range can be probed with this process.
@article{arxiv.2511.19617,
title = {Naive $T$-odd Drell-Yan angular coefficients as a probe of the dimension-8 SMEFT},
author = {Frank Petriello and Kaan Şimşek},
journal= {arXiv preprint arXiv:2511.19617},
year = {2026}
}