Partially quenched study of strange baryon with Nf = 2 twisted mass fermions

Details Partially quenched study of strange baryon with Nf = 2 twisted mass fermions Partially quenched study of strange baryon with Nf = 2 twisted mass fermions

2009-05-18

arxiv.org/abs/0905.2894v2

PoS LATTICE2008:123,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 9 figures, Talk presented at The XXVI International Symposium on Lattice Field Theory, LATTICE 2008, July 14 - 19, 20

Scientific paper

We present results on the mass of the baryon octet and decuplet using two flavors of light dynamical twisted mass fermions. The strange quark mass is fixed to its physical value from the kaon sector in a partially quenched set up. Calculations are performed for light quark masses corresponding to a pion mass in the range 270-500 MeV and lattice sizes of 2.1 fm and 2.7 fm. We check for cut-off effects and isospin breaking by evaluating the baryon masses at two different lattice spacings. We carry out a chiral extrapolation for the octet baryons and discuss results for the Omega.

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