The 39th International Symposium on Lattice Field Theory (Lattice 2022)

Hadronic Parity Violation from Twisted Mass Lattice QCD

12 Aug 2022, 15:50

20m

CP1-HSZ/1.004 (CP1-HSZ) - HS7 (CP1-HSZ)

Oral Presentation Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions

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 $h_{\pi }^1$. 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 $h_{\pi }^1$.

Presentation materials

Schlage_NPV.pdf

Schlage_NPV_version2.pdf