Baryon masses, chiral extrapolations, and all that⋆

2005/01/31 by Matthias Frink, M. Frink, Ulf-G. Meißner +3 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th

paper · pdf · doi:10.1140/epja/i2005-10063-9

published as Eur.Phys.J. A24 (2005) 395-409 · 20 pp, 7 figs (13 eps files); more lattice data included, discussion sharpened, references added, main conclusions unchanged

arxiv created 2005/02/04 · openalex publication_date 2005/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We calculate the baryon octet masses to fourth order in chiral perturbation theory employing dimensional and cut-off regularization. We analyze the pion and kaon mass dependences of the baryon masses based on the MILC data. We show that chiral perturbation theory gives stable chiral extrapolation functions for pion (kaon) masses below 550 (600) MeV. The pion-nucleon sigma term in SU(3) is also investigated, we find σ_πN (0) = 50.7 - 53.7 MeV.

Citations

• Chiral extrapolations of baryon masses for unquenched three-flavor lattice simulations
• CHIRAL DYNAMICS IN NUCLEONS AND NUCLEI

Cited by

• Chiral extrapolations and the covariant small scale expansion☆☆This research is part of the EU Integrated Infrastructure Initiative Hadron Physics Project under contract number RII3-CT-2004-506078. Work supported in part by DFG (SFB/TR 16, “Subnuclear Structure of Matter”) and BMBF.

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