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001     808953
005     20210129222924.0
024 7 _ |a 10.1103/PhysRevLett.116.172001
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100 1 _ |a Durr, S.
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245 _ _ |a Lattice Computation of the Nucleon Scalar Quark Contents at the Physical Point
260 _ _ |a College Park, Md.
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500 _ _ |a arXiv:1510.08013
520 _ _ |a We present a QCD calculation of the u, d, and s scalar quark contents of nucleons based on 47 lattice ensembles with Nf=2+1 dynamical sea quarks, 5 lattice spacings down to 0.054 fm, lattice sizes up to 6 fm, and pion masses down to 120 MeV. Using the Feynman-Hellmann theorem, we obtain fNud=0.0405(40)(35) and fNs=0.113(45)(40), which translates into σπN=38(3)(3)  MeV, σsN=105(41)(37)  MeV, and yN=0.20(8)(8) for the sigma terms and the related ratio, where the first errors are statistical and the second errors are systematic. Using isospin relations, we also compute the individual up and down quark contents of the proton and neutron (results in the main text).
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536 _ _ |a Up and down quark masses from lattice QCD + QED (hjs00_20151101)
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700 1 _ |a Hoelbling, C.
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700 1 _ |a Katz, S. D.
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700 1 _ |a Portelli, A.
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700 1 _ |a Torrero, C.
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700 1 _ |a Toth, B. C.
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700 1 _ |a Varnhorst, L.
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773 _ _ |a 10.1103/PhysRevLett.116.172001
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