TY - JOUR
T1 - Model-independent extraction of the proton charge radius from electron scattering
AU - Hill, Richard J.
AU - Paz, Gil
PY - 2010/12/3
Y1 - 2010/12/3
N2 - Constraints from analyticity are combined with experimental electron-proton scattering data to determine the proton charge radius. In contrast to previous determinations, we provide a systematic procedure for analyzing arbitrary data without model-dependent assumptions on the form-factor shape. We also investigate the impact of including electron-neutron scattering data, and ππ→NN̄ data. Using representative data sets we find rEp=0.870±0.023±0.012fm using just proton scattering data; rEp=0.880-0.020+0.017±0.007fm adding neutron data; and rEp=0.871±0.009±0.002±0.002fm adding ππ data. The analysis can be readily extended to other nucleon form factors and derived observables.
AB - Constraints from analyticity are combined with experimental electron-proton scattering data to determine the proton charge radius. In contrast to previous determinations, we provide a systematic procedure for analyzing arbitrary data without model-dependent assumptions on the form-factor shape. We also investigate the impact of including electron-neutron scattering data, and ππ→NN̄ data. Using representative data sets we find rEp=0.870±0.023±0.012fm using just proton scattering data; rEp=0.880-0.020+0.017±0.007fm adding neutron data; and rEp=0.871±0.009±0.002±0.002fm adding ππ data. The analysis can be readily extended to other nucleon form factors and derived observables.
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U2 - 10.1103/PhysRevD.82.113005
DO - 10.1103/PhysRevD.82.113005
M3 - Article
AN - SCOPUS:78651317962
SN - 1550-7998
VL - 82
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 113005
ER -