Electric Dipole Moments as Precision Probes of CP-Violating Top-Quark Interactions in SMEFT
Abstract
Electric dipole moments (EDMs) provide some of the most sensitive probes of CP-violating interactions beyond the Standard Model (SM). Within the Standard Model Effective Field Theory (SMEFT), we investigate constraints on CP-violating top-quark interactions using current and projected leptonic and hadronic EDM measurements. Our analysis incorporates the complete chain of relevant effects, including one- and two-loop matching, Barr-Zee contributions, Weinberg operator and heavy-quark threshold corrections, and renormalization-group induced operator mixing. We demonstrate the strong complementarity between leptonic and hadronic EDM observables and show that future proton EDM searches could significantly strengthen constraints on several CP-violating top-quark interactions.
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BibTeX
@misc{kala2026electric,
title = {{Electric Dipole Moments as Precision Probes of CP-Violating Top-Quark Interactions in SMEFT}},
author = {Subhajit Kala and Soumitra Nandi and Sonakshi Saha},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.36019},
eprint = {2609.36019},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.36019},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Electric Dipole Moments as Precision Probes of CP-Violating Top-Quark Interactions in SMEFT
AU - Subhajit Kala
AU - Soumitra Nandi
AU - Sonakshi Saha
PY - 2026
DA - 2026/09/28
PB - arXiv
DO - 10.48550/arxiv.2609.36019
UR - https://arxiv.org/abs/2609.36019
AB - Electric dipole moments (EDMs) provide some of the most sensitive probes of CP-violating interactions beyond the Standard Model (SM). Within the Standard Model Effective Field Theory (SMEFT), we investigate constraints on CP-violating top-quark interactions using current and projected leptonic and hadronic EDM measurements. Our analysis incorporates the complete chain of relevant effects, including one- and two-loop matching, Barr-Zee contributions, Weinberg operator and heavy-quark threshold corrections, and renormalization-group induced operator mixing. We demonstrate the strong complementarity between leptonic and hadronic EDM observables and show that future proton EDM searches could significantly strengthen constraints on several CP-violating top-quark interactions.
ER -