Neutron Electric Dipole Moment from quark Chromoelectric Dipole Moment
Tanmoy Bhattacharya (1, 2), Vincenzo Cirigliano (1), Rajan Gupta, (1), Emanuele Mereghetti (1), Boram Yoon (1) ((1) Los Alamos National, Laboratory, (2) Santa Fe Institute)
TL;DR
This paper discusses the relationship between RI-$ ilde{ m S}$MOM and $ar{ m MS}$ schemes for quark chromo-EDM operators and introduces a method to evaluate the neutron EDM using lattice QCD techniques.
Contribution
It presents a new approach to connect different renormalization schemes and demonstrates a preliminary lattice calculation for neutron EDM from quark chromo-EDM.
Findings
Established the connection between RI-$ ilde{ m S}$MOM and $ar{ m MS}$ schemes.
Outlined a method for calculating neutron EDM from quark chromo-EDM.
Provided initial lattice QCD results using clover and HISQ quarks.
Abstract
The connection between a regularization-independent symmetric momentum substraction (RI-MOM) and the scheme for the quark chromo EDM operators is discussed. A method for evaluating the neutron EDM from quark chromoEDM is described. A preliminary study of the signal in the matrix element using clover quarks on a highly improved staggered quark (HISQ) ensemble is shown.
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