Speaker
Fabian Lange
(Universität Zürich and Paul Scherrer Institut)
Description
The gradient flow offers a unique renormalization scheme applicable in both perturbation theory and lattice calculations. Especially, it suppresses operator mixing on the lattice, shifting it to the perturbative matching calculation. In this talk, we discuss using the gradient flow scheme for the four-quark operators describing neutral meson mixing and lifetimes. While meson mixing calculations are well-established on the lattice and validate our procedure, a lattice calculation of matrix elements for heavy meson lifetimes remains outstanding. We provide an overview of the full calculation process and present some preliminary results.
Primary authors
Andrea Shindler
(RWTH Aachen University)
Antonio Rago
(University of Southern Denmark)
Fabian Lange
(Universität Zürich and Paul Scherrer Institut)
Jonas Kohnen
(RWTH Aachen University)
Matthew Black
(University Siegen)
Oliver Witzel
(Universität Siegen)
Robert Harlander
(RWTH Aachen University)
