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- W2022253313 abstract "The nucleon mass MN and the nucleaon σ-term σ = 〈|muu + mddd|N〉 are calculated from a low momenta QCD effective larangian involving dynamically massive quarks interacting with the pion field. Minimizing the aggregate energy of the quark Dirac sea plus the energy of an extra bound-state level for valence quarks, we find MN = 1207 MeV. Introducing non-zero current quark masses we calculate the value of the σ-term: σ = 54 MeV." @default.
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- W2022253313 date "1989-08-01" @default.
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- W2022253313 title "Nucleon mass and nucleon sigma term" @default.
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- W2022253313 doi "https://doi.org/10.1016/0550-3213(89)90587-7" @default.
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