Neutrinoless doubleβdecay and effective field theory

Neutrinoless double b decay and effective field theory

We analyze neutrinoless double b decay (0nbb decay! mediated by heavy particles from the standpoint of effective field theory. We show how symmetries of the 0nbb-decay quark operators arising in a given particle physics model determine the form of the corresponding effective, hadronic operators. We classify the latter according to their symmetry transformation properties as well as the order at...

Renormalization and Effective Field Theory

Effective Field Theory

Attempts to apply effective field theory (EFT) methods to nonrelativistic nucleon-nucleon (N N) scattering have raised questions about the nature and limitations of an EFT expansion when used nonperturbatively. We discuss the characteristics of a meaningful EFT analysis and compare them with traditional approaches to N N scattering. A key feature of an EFT treatment is a systematic expansion in...

Effective Field Theory ∗ † ‡

3 " Integrating Out " versus " Matching " 19 3.

Effective β-functions for Effective Field Theory

We consider the problem of determining the beta-functions for any reduced effective field theory. Even though not all the Green’s functions of a reduced effective field theory are renormalizable, unlike the full effective field theory, certain effective beta-functions for the reduced set of couplings may be calculated without having to introduce vertices in the Feynman rules for redundant opera...