83 citations · 105 across the 5 of their papers we have counts for
6 papers · 1 filter
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…
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…
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…
Toward to matrix elements from lattice QCD
Lorenzo Barca, Gunnar Bali, Sara Collins
QCD matrix elements of axial and vector currents between nucleons are required for the Monte Carlo reconstruction of the energy of neutrinos that are detected in long baseline osci…
Investigating axial matrix elements
Lorenzo Barca, Gunnar S. Bali, Sara Collins
Excited state contamination is one of the most challenging sources of systematics to tackle in the determination of nucleon matrix elements and form factors. The signal-to-noise pr…
Nucleon axial structure from lattice QCD
Gunnar S. Bali, Lorenzo Barca, Sara Collins +7
We present a new analysis method that allows one to understand and model excited state contributions in observables that are dominated by a pion pole. We apply this method to extra…