Neutron Electric Dipole Moment on the Lattice

Abstract

For the neutron to have an electric dipole moment (EDM), the theory of nature must have T, or equivalently CP, violation. Neutron EDM is a very good probe of novel CP violation in beyond the standard model physics. To leverage the connection between measured neutron EDM and novel mechanism of CP violation, one requires the calculation of matrix elements for CP violating operators, for which lattice QCD provides a first principle method. In this paper, we review the status of recent lattice QCD calculations of the contributions of the QCD $\Theta$-term, the quark EDM term, and the quark chromo-EDM term to the neutron EDM.

Plenary talk presented at the 35th International Symposium on Lattice Field Theory (Lattice 2017), Granada, Spain, June 2017. 15 pages, 10 figures

References in corpus (2)

• Low Energy Precision Test of Supersymmetry
• The Electric Dipole Form Factor of the Nucleon in Chiral Perturbation Theory to Sub-leading Order

Cited by in corpus (7)

• The phenomenology of electric dipole moments in models of scalar leptoquarks
• Confirming the Existence of the strong CP Problem in Lattice QCD with the Gradient Flow
• Short flow-time coefficients of CP-violating operators
• Fully Testable Axion Dark Matter within a Minimal $SU(5)$ GUT
• A regression algorithm for accelerated lattice QCD that exploits sparse inference on the D-Wave quantum annealer
• Electric Dipole Moments as Probes of $B$ Anomaly
• One-loop matching for quark dipole operators in a gradient-flow scheme