Preprint
Sep 2026
Lattice QCD calculation of the pion-nucleon coupling $\bar{g}_0$ induced by the QCD $\Theta$-term
We present lattice QCD results for the CP violating pion-nucleon coupling $\bar{g}_0$ induced by the QCD $\overline\Theta$ term from the analysis of three 2+1+1-flavor ensembles generated with highly improved staggered quarks (HISQ) by the MILC collaboration. These ensembles are at lattice spacing $a\approx 0.09~\text{...
Fang-Cheng He, Tanmoy Bhattacharya, Rajan Gupta et al.
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