3 papers
hep-lat2026
Nucleon-sigma terms at with a variational analysis from lattice QCD
Lorenzo Barca, Gunnar Bali, Sara Collins +1
Nucleon sigma terms are important for the decomposition of the nucleon mass and for searches for new physics beyond the Standard Model involving scalar interactions. A persistent t…
hep-lat2025
Nucleon sigma terms with a variational analysis from Lattice QCD
Lorenzo Barca, Gunnar Bali, Sara Collins
We determine the nucleon-sigma terms from lattice QCD. We find that the dominant excited state contamination in the nucleon three-point function with a scalar current is due to the…
hep-lat2024
Progress on nucleon transition matrix elements with a lattice QCD variational analysis
Lorenzo Barca, Gunnar Bali, Sara Collins
Nucleon weak matrix elements can be extracted from nucleon correlation functions with lattice QCD simulations. The signal-to-noise ratio prohibits the analysis at large source-sink…