TY - JOUR

T1 - [Formula presented] term, [Formula presented] in the nucleon, and the scalar form factor

T2 - A lattice study

AU - Dong, S. J.

AU - Lagaë, J.

AU - Liu, K. F.

PY - 1996

Y1 - 1996

N2 - We report on a lattice QCD calculation of the [Formula presented] term, the scalar form factor, and [Formula presented]. The disconnected insertion part of [Formula presented] is found to be 1.8±0.1 times larger than the connected insertion contribution. The [Formula presented] dependence of [Formula presented] is about the same as [Formula presented] of the proton so that [Formula presented] MeV. The ratio [Formula presented]. Both results favor a [Formula presented] MeV, slightly larger than our direct calculation of [Formula presented] MeV. We also compute [Formula presented] and [Formula presented] 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 [Formula presented] term.

AB - We report on a lattice QCD calculation of the [Formula presented] term, the scalar form factor, and [Formula presented]. The disconnected insertion part of [Formula presented] is found to be 1.8±0.1 times larger than the connected insertion contribution. The [Formula presented] dependence of [Formula presented] is about the same as [Formula presented] of the proton so that [Formula presented] MeV. The ratio [Formula presented]. Both results favor a [Formula presented] MeV, slightly larger than our direct calculation of [Formula presented] MeV. We also compute [Formula presented] and [Formula presented] 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 [Formula presented] term.

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U2 - 10.1103/PhysRevD.54.5496

DO - 10.1103/PhysRevD.54.5496

M3 - Article

AN - SCOPUS:0001540832

SN - 1550-7998

VL - 54

SP - 5496

EP - 5500

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 9

ER -