term,in the nucleon, and the scalar form factor: A lattice study
- 1 November 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 54 (9), 5496-5500
- https://doi.org/10.1103/physrevd.54.5496
Abstract
We report on a lattice QCD calculation of the term, the scalar form factor, and . The disconnected insertion part of is found to be 1.8±0.1 times larger than the connected insertion contribution. The dependence of is about the same as of the proton so that MeV. The ratio . Both results favor a MeV, slightly larger than our direct calculation of MeV. We also compute and and find that the agreement with those from the octet baryon mass splittings crucially depends on the inclusion of the large disconnected insertion. Finally, we give our result for the term.
Keywords
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