Strangeness in the baryon ground states

Details Strangeness in the baryon ground states Strangeness in the baryon ground states

2012-02-16

arxiv.org/abs/1202.3556v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 tables, 3 figures

Scientific paper

We compute the strangeness content of the baryon ground states based on an analysis of recent lattice simulations of the BMW, PACS, LHPC and HSC groups for the pion-mass dependence of the baryon masses. Our results rely on the relativistic chiral Lagrangian and large-$N_c$ sum rule estimates of the counter terms relevant for the baryon masses at N$^3$LO. A partial summation is implied by the use of physical baryon and meson masses in the one-loop contributions to the baryon self energies. A simultaneous description of the lattice results of the BMW, LHPC, PACS and HSC groups is achieved. We predict the pion- and strangeness sigma terms and the pion-mass dependence of the octet and decuplet ground states at different strange quark masses.

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