Publications
Publication Information
Title | One-loop matching for quark dipole operators in a gradient-flow scheme |
Authors | Emanuele Mereghetti, Christopher Monahan, Matthew Rizik, Andrea Shindler, Peter Stoffer |
JLAB number | JLAB-THY-21-3534 |
LANL number | (None) |
Other number | DOE/OR/23177-5360, UWThPh 2021-23, PSI-PR-21-28 |
Document Type(s) | (Journal Article) |
Associated with EIC: | No |
Supported by Jefferson Lab LDRD Funding: | No |
Funding Source: | Nuclear Physics (NP) |
Journal Compiled for Journal of High Energy Physics Volume 2022 Page(s) 50 Refereed | |
Publication Abstract: | The quark chromo-electric dipole (qCEDM) operator is a CP-violating operator describing, at hadronic energies, beyond the standard model contributions to the electric dipole moment of particles with non-zero spin. In this paper we define renormalized dipole operators in a regularization-independent scheme using the gradient flow and we perform the matching at one loop in perturbation theory to renormalized operators of the same and lower dimension in the more familiar MS scheme. We also determine the matching coefficients for the quark chromo-magnetic dipole operator (qCMDM), which contributes for example to matrix elements relevant to CP-violating and CP-conserving kaon decays. The calculation provides a basis for future lattice-QCD computations of hadronic matrix elements of the qCEDM and qCMDM operators. |
Experiment Numbers: | other |
Group: | THEORY CENTER |
Document: | |
DOI: | https://doi.org/10.1007/JHEP04(2022)050 |
Accepted Manuscript: | Mereghetti2022_Article_One-loopMatchingForQuarkDipole.pdf |
Supporting Documents: | |
Supporting Datasets: |