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@ARTICLE{Drr:18058,
      author       = {Dürr, S. and Fodor, Z. and Hemmert, T. and Hoelbling, C.
                      and Frison, J. and Katz, S.D. and Krieg, S. and Kurth, T.
                      and Lellouch, L. and Lippert, T. and Portelli, A. and Ramos,
                      A. and Schäfer, A. and Szabó, K.K.},
      title        = {{S}igma term and strangeness content of octet baryons},
      journal      = {Physical review / D},
      volume       = {85},
      number       = {1},
      issn         = {1550-7998},
      address      = {[S.l.]},
      publisher    = {Soc.},
      reportid     = {PreJuSER-18058},
      pages        = {014509},
      year         = {2012},
      note         = {Computations were performed using HPC resources from F.Z.
                      Julich and from GENCI-[IDRIS/ CCRT] (Grant No. 52275) and
                      clusters at Wuppertal and CPT. This work is supported in
                      part by EU Grants No. I3HP, FP7/2007-2013/ERC, No. 208740,
                      No. MRTN-CT-2006-035482 (FLAVIAnet), DFG Grants No. FO
                      502/2, SFB-TR 55, by CNRS Grant GDR No. 2921, and PICS No.
                      4707. The authors also thank Martin Jung for pointing out an
                      error in the normalization of the dimensionless sigma
                      terms.},
      abstract     = {By using lattice QCD computations we determine the sigma
                      terms and strangeness content of all octet baryons by means
                      of an application of the Hellmann-Feynman theorem. In
                      addition to polynomial and rational expressions for the
                      quark-mass dependence of octet members, we use SU(3)
                      covariant baryon chiral perturbation theory to perform the
                      extrapolation to the physical up and down quark masses. Our
                      Nf = 2 + 1 lattice ensembles include pion masses down to
                      about 190 MeV in large volumes (M pi L greater than or
                      similar to 4), and three values of the lattice spacing. Our
                      main results are the nucleon sigma term sigma(pi N) =
                      39(4)((+18)(-7)) and the strangeness content y(N) =
                      0.20(7)((+13)(-17)). Under the assumption of validity of
                      covariant baryon chi PT in our range of masses one finds
                      y(N) = 0.276(77)((+90)(-62)).},
      keywords     = {J (WoSType)},
      cin          = {JSC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {Scientific Computing (FUEK411) / 411 - Computational
                      Science and Mathematical Methods (POF2-411)},
      pid          = {G:(DE-Juel1)FUEK411 / G:(DE-HGF)POF2-411},
      shelfmark    = {Astronomy $\&$ Astrophysics / Physics, Particles $\&$
                      Fields},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000299927500006},
      doi          = {10.1103/PhysRevD.85.014509},
      url          = {https://juser.fz-juelich.de/record/18058},
}