Speaker
Dr
Emanuele Mereghetti
(LANL)
Description
Low-energy tests of fundamental symmetries are extremely sensitive probes of physics beyond the
Standard Model (SM), reaching scales that are comparable, if not higher, than directly accessible at the
energy frontier. The interpretation of low-energy precision experiments and their connection with
models of BSM physics relies on controlling the theoretical uncertainties induced by the
nonperturbative nature of QCD at low energy and of the nuclear interactions. In this talk I will discuss
how Effective Field Theories techniques can lead to improved predictions for low-energy experiments,
with controlled theoretical uncertainties. I will first introduce an EFT framework for the description of
neutrinoless double beta decay. I will show how the EFT allows to derive a very general
parameterization of the double beta rate, which captures but goes beyond the standard scenario of light
Majorana neutrino exchange, and to construct the double beta transition operators in a consistent power
counting. I will then review recent progress in the calculation of electric dipole moments of the nucleon
and of light nuclei, and address the remaining challenges for a smooth connection between experiments
and theories of physics beyond the Standard Model.
Primary author
Dr
Emanuele Mereghetti
(LANL)
