Three-particle Nππ state contribution to the nucleon two-point function in lattice QCD
| Autor: | Oliver Bär |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Quantum chromodynamics
Physics Particle physics Chiral perturbation theory 010308 nuclear & particles physics High Energy Physics::Lattice Lattice field theory Order (ring theory) Function (mathematics) Lattice QCD State (functional analysis) 01 natural sciences High Energy Physics - Lattice 0103 physical sciences 010306 general physics Nucleon |
| Zdroj: | Physical Review |
| ISSN: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.97.094507 |
| Popis: | The three-particle $N\pi\pi$-state contribution to the QCD two-point function of standard nucleon interpolating fields is computed to leading order in chiral perturbation theory. Using the experimental values for two low-energy coefficients the impact of this contribution on lattice QCD calculations of the nucleon mass is estimated. The impact is found to be at the per mille level at most and negligible in practice. Comment: 16 pages, 5 figures. V2: Error in eq. (A2) corrected, figures 3 to 5 updated, conclusions unchanged. Discussion of FV corrections expanded. Typos corrected, references added. Matches published version in Phys. Rev. D |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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