Resumen
Preliminary results on the isovector and isoscalar axial-vector form factors of the proton from a lattice QCD calculation are presented and discussed. The results are based on a quenched 163 × 24 lattice at β = 6.0 with Wilson fermions at κ = 0.152. Results from the smeared source are compared with those from the point source. It is found that the smeared source gives somewhat better results at zero momentum transfer but worse results at high momentum transfers. Our results also suggest that the quark loop contribution to the flavor-singlet axial-vector current may play an important role in understanding the quark-spin content of the proton as determined from the recent EMC experiment.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 467-471 |
| Número de páginas | 5 |
| Publicación | Nuclear Physics B - Proceedings Supplements |
| Volumen | 20 |
| N.º | C |
| DOI | |
| Estado | Published - may 20 1991 |
Nota bibliográfica
Funding Information:specela~as about the gbou spin 4 tent assuo~4~l u~tlb the tiaugleanomoly 5. In this manuscript, we shall repoet our prdiminafy results on the lattice gauge calculalmn of the isovec~r and isoscalar axial form factors of the proton. The cal- *This research was supported in part by the DOE Grand Challenge Program. tpresent address: Institute of High Energy Physics. Beijing. China
Financiación
specela~as about the gbou spin 4 tent assuo~4~l u~tlb the tiaugleanomoly 5. In this manuscript, we shall repoet our prdiminafy results on the lattice gauge calculalmn of the isovec~r and isoscalar axial form factors of the proton. The cal- *This research was supported in part by the DOE Grand Challenge Program. tpresent address: Institute of High Energy Physics. Beijing. China
| Financiadores | Número del financiador |
|---|---|
| DOE Grand Challenge Program |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics