2006/01/31 by D. B. Leinweber, Derek B. Leinweber, S. Boinepalli +7 · 102 citations
Physics and Astronomy · #Baryon #Baryon number #Charge (physics) #Charge radius #Chiral perturbation theory #Electric charge #Extrapolation #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Strange quark #hep-lat
paper · pdf · doi:10.1103/physrevlett.97.022001
published in Physical Review Letters 97(2), 022001 (American Physical Society) · Manuscript accepted for publicatoin in Phys. Rev. Lett. 4 pages, 5 figures, 1 table
openalex publication_date 2006/07/10 · arxiv created 2006/07/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
By combining the constraints of charge symmetry with new chiral extrapolation techniques and recent low-mass quenched lattice QCD simulations of the individual quark contributions to the electric charge radii of the baryon octet, we obtain an accurate determination of the strange electric charge radius of the proton. While this analysis provides a value for G(E)(s)(Q(2) = 0.1 GeV(2)) in agreement with the best current data, the theoretical error is comparable with that expected from future HAPPEX results from JLab. Together with the earlier determination of G(M)(s), this result considerably constrains the role of hidden flavor in the structure of the nucleon.