Sum rules for CP-violating operators of Weinberg type

10 Nov 2020  ·  Haisch Ulrich, Hala Amando ·

We estimate the size of the hadronic matrix elements of CP-violating three-gluon and four-gluon Weinberg operators using sum-rule techniques. In the three-gluon case, we are able to reproduce the expressions given in earlier works, while the four-gluon results obtained in this article are new... Our paper therefore represents the first systematic study of contributions to the electric dipole moment of the neutron due to CP-violating dimension-six and dimension-eight operators. We provide many details on both the derivation of the sum rules as well as the analysis of the uncertainties that plague our final predictions. read more

PDF Abstract
No code implementations yet. Submit your code now


High Energy Physics - Phenomenology