Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

Renormalization of the quark chromomagnetic dipole operators in the gradient flow scheme at next-to-next-to-leading order QCD

Aug 11, 2022, 10:20 AM
20m
CP1-HSZ/Ground-0.001 - HS3 (CP1-HSZ)

CP1-HSZ/Ground-0.001 - HS3

CP1-HSZ

50
Oral Presentation QCD in searches for physics beyond the Standard Model QCD in searches for physics beyond the Standard Model

Speaker

Robert Harlander

Description

Quark chromomagnetic dipole operators encode low-energy effects of heavy particles on flavor observables related to neutral Kaon mixing or Kaon decays, for example. However, their renormalization on the lattice is complicated by the power-divergent mixing with lower-dimensional operators. The gradient flow provides a promising scheme to circumvent this problem. The matching to the MSbar scheme can be obtained by a perturbative calculation. In this talk, we report on the results for the matching coefficients through NNLO QCD and discuss the impact of these corrections on the theoretical precision.

Primary authors

Janosch Borgulat (RWTH Aachen University) Robert Harlander Matthew Rizik (Michigan State University) Andrea Shindler (Michigan State University)

Presentation materials