Speaker
Nikolas Schlage
(Helmholtz-Institut für Strahlen- und Kernphysik)
Description
We present results for an exploratory lattice calculation of the leading parity-violating pion-nucleon coupling $h^1_\pi$. Based on the PCAC relation we use a parity-conserving Lagrangian and focus on the techniques to determine the nucleon matrix elements of the effective four-quark operators. For our study we employ an ensemble of Twisted Mass fermions with 260 MeV pion mass. Barring mixing with lower-dimensional operators and renormalization at this stage, we discuss our estimate $h^1_\pi$.
Primary authors
Nikolas Schlage
(Helmholtz-Institut für Strahlen- und Kernphysik)
Marcus Petschlies
(Helmholtz-Instituts für Strahlen- und Kernphysik)
Aniket Sen
(Helmholtz-Institut für Strahlen- und Kernphysik)
Carsten Urbach
(Helmholtz-Institut für Strahlen- und Kernphysik)
