Flavour blindness and patterns of flavour symmetry breaking in lattice simulations of up, down and strange quarks

@inproceedings{Bietenholz2011FlavourBA,
  title={Flavour blindness and patterns of flavour symmetry breaking in lattice simulations of up, down and strange quarks},
  author={Wolfgang Bietenholz and Vitaly Bornyakov and Meinulf G{\"o}ckeler and R. M. Horsley and Wendy Lockhart and Yoshifumi Nakamura and Holger Perlt and Dirk Pleiter and P. E. L. Rakow and Gerrit Schierholz and Arwed Schiller and Thomas Streuer and Hinnerk St{\"u}ben and Frank Winter and James M. Zanotti},
  year={2011}
}
QCD lattice simulations with 2+1 flavours (when two quark flavours are mass degenerate) typically start at rather large up-down and strange quark masses and extrapolate first the strange quark mass and then the up-down quark mass to its respective physical value. Here we discuss an alternative method of tuning the quark masses, in which the singlet quark mass is kept fixed. Using group theory the possible quark mass polynomials for a Taylor expansion about the flavour symmetric line are found… CONTINUE READING

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