# Nonperturbative renormalization and running of composite operators in the Schrodinger Functional scheme

Particle Physics Theory seminar

#### Nonperturbative renormalization and running of composite operators in the Schrodinger Functional scheme

• Event time: 11:00am
• Event date: 26th October 2017
• Speaker: David Preti
• Location: Higgs Centre Seminar Room, Room 4305,

### Event details

In asymptotic free theories QCD-like, the perturbative computation of the RG evolution is limited to a short range scales at high energies. In this talk I will present some recent (preliminary) results for the non-perturbative first-principle computation of the renormalization and running of the tensor currents ($N_f=0,2$) and the BSM four-fermion operators $\Delta F=2 (N_f=2)$, and of quark masses ($N_f=3$). Thanks to the recursive finite-size scaling techniques in the Schrödinger Functional (SF) renormalization scheme , developed by the ALPHA collaboration, it is possible to provide the non-perturbative running over two orders of magnitude in scales, from low energies $O(\Lambda_{QCD})$ to high energies $O(M_W)$ where perturbation theory can be safely applied.

### About Particle Physics Theory seminars

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..