Sigma term and strangeness content of the nucleon

Abstract : A status report is given for a joint project of the Budapest-Marseille-Wuppertal collaboration and the Regensburg group to study the quark mass-dependence of octet baryons in SU(3) Baryon XPT. This formulation is expected to extend to larger masses than Heavy-Baryon XPT. Its applicability is tested with 2+1 flavor data which cover three lattice spacings and pion masses down to about 190 MeV, in large volumes. Also polynomial and rational interpolations in M_\pi^2 and M_K^2 are used to assess the uncertainty due to the ansatz. Both frameworks are combined to explore the precision to be expected in a controlled determination of the nucleon sigma term and strangeness content.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01258108
Contributor : Laurent Lellouch <>
Submitted on : Monday, January 18, 2016 - 4:20:04 PM
Last modification on : Monday, September 23, 2019 - 4:38:02 PM

Links full text

Identifiers

  • HAL Id : hal-01258108, version 1
  • ARXIV : 1012.1208

Collections

Citation

S. Durr, Z. Fodor, J. Frison, T. Hemmert, C. Hoelbling, et al.. Sigma term and strangeness content of the nucleon. 28th International Symposium on Lattice Field Theory (Lattice 2010), Jun 2010, Villasimius, Italy. pp.102. ⟨hal-01258108⟩

Share

Metrics

Record views

135