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Title: Model-independent extraction of the proton charge radius from electron scattering

Abstract

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 {pi}{pi}{yields}NN data. Using representative data sets we find r{sub E}{sup p}=0.870{+-}0.023{+-}0.012 fm using just proton scattering data; r{sub E}{sup p}=0.880{sub -0.020}{sup +0.017{+-}}0.007 fm adding neutron data; and r{sub E}{sup p}=0.871{+-}0.009{+-}0.002{+-}0.002 fm adding {pi}{pi} data. The analysis can be readily extended to other nucleon form factors and derived observables.

Authors:
;  [1]
  1. Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637 (United States)
Publication Date:
OSTI Identifier:
21503712
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 82; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.82.113005; (c) 2010 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON-NEUTRON INTERACTIONS; ELECTRON-PROTON INTERACTIONS; ELECTRONS; EXTRACTION; FORM FACTORS; NEUTRONS; PARTICLE RADII; PION-PION INTERACTIONS; PROTONS; SCATTERING; BARYONS; DIMENSIONLESS NUMBERS; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTONS; MESON-MESON INTERACTIONS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; SEPARATION PROCESSES

Citation Formats

Hill, Richard J, and Paz, Gil. Model-independent extraction of the proton charge radius from electron scattering. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.113005.
Hill, Richard J, & Paz, Gil. Model-independent extraction of the proton charge radius from electron scattering. United States. https://doi.org/10.1103/PHYSREVD.82.113005
Hill, Richard J, and Paz, Gil. 2010. "Model-independent extraction of the proton charge radius from electron scattering". United States. https://doi.org/10.1103/PHYSREVD.82.113005.
@article{osti_21503712,
title = {Model-independent extraction of the proton charge radius from electron scattering},
author = {Hill, Richard J and Paz, Gil},
abstractNote = {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 {pi}{pi}{yields}NN data. Using representative data sets we find r{sub E}{sup p}=0.870{+-}0.023{+-}0.012 fm using just proton scattering data; r{sub E}{sup p}=0.880{sub -0.020}{sup +0.017{+-}}0.007 fm adding neutron data; and r{sub E}{sup p}=0.871{+-}0.009{+-}0.002{+-}0.002 fm adding {pi}{pi} data. The analysis can be readily extended to other nucleon form factors and derived observables.},
doi = {10.1103/PHYSREVD.82.113005},
url = {https://www.osti.gov/biblio/21503712}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 11,
volume = 82,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 2010},
month = {Wed Dec 01 00:00:00 EST 2010}
}