#### Beyond the Standard model matrix elements with the gradient flow: a new method for the calculation of the electric dipole moment

- Event time: 2:00pm
- Event date: 3rd March 2016
- Speaker: Andrea Shindler (Research Centre Jülich)
- Location: Higgs Centre Seminar Room, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

The Standard Model of Particle Physics alone is not sufficient to explain certain phenomena observed in our Universe that have profound consequences to life as we know it, such as the matter-antimatter asymmetry and the existence of Dark Matter and Dark Energy. An understanding of these phenomena requires physics beyond the Standard Model (BSM), with experimental signatures that are most likely small and masked by strong interaction physics within the Standard Model (i.e. Quantum Chromodynamics (QCD)). Therefore future precision terrestrial measurements of any BSM observable

will require an equally precise understanding of its strong interaction QCD component. To calculate the QCD component of key BSM matrix elements related to quark and strong theta-CP violations we propose to use the gradient flow within the lattice QCD framework. I will outline the strategy for such computations and present some preliminary results. A similar numerical and theoretical scheme can be used to compute the strange content of the nucleon.

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..