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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: pdf
DOI: https://doi.org/10.1007/JHEP04(2022)050
Accepted Manuscript: Mereghetti2022_Article_One-loopMatchingForQuarkDipole.pdf
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