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Nucleon-sigma terms at $m_π=222 ~\rm MeV$ with a variational analysis from lattice QCD

Barca, Lorenzo et al.
arXiv (All) · Papers
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high-energy-physics-lattice
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 tension between lattice QCD and phenomenological determinations may be due to uncontrolled excited-state contamination in
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