期刊
PHYSICAL REVIEW D
卷 89, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.89.074511
关键词
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资金
- EU [283286, 227431]
- University of Adelaide
- Australian Research Council through the ARC Centre of Excellence for Particle Physics at the Terascale [FL0992247, DP110101265, FT120100821, FT100100005]
- STFC [ST/J000493/1, ST/L000458/1, ST/G000522/1, ST/J000329/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000493/1, ST/J000329/1, ST/L000458/1, ST/G000522/1] Funding Source: researchfish
We present a 2 + 1-flavor lattice QCD calculation of the electromagnetic Dirac and Pauli form factors of the octet baryons. The magnetic Sachs form factor is extrapolated at six fixed values of Q(2) to the physical pseudoscalar masses and infinite volume using a formulation based on heavy-baryon chiral perturbation theory with finite-range regularization. We properly account for omitted disconnected quark contractions using a partially quenched effective field theory formalism. The results compare well with the experimental form factors of the nucleon and the magnetic moments of the octet baryons.
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