Proton charge radius extraction from electron scattering data using dispersively improved chiral effective field theory
Abstract
We extract the proton charge radius from the elastic form factor data using a theoretical framework combining chiral effective field theory and dispersion analysis. Complex analyticity in the momentum transfer correlates the behavior of the spacelike form factor in different Q2 regions and permits the use of data up to Q2 ~ 0.5 GeV2 in constraining the radius. The predictive theory describes the data with the same accuracy as current descriptive models (global fits). We obtain a radius of 0.844(7) fm, consistent with the high-precision muonic hydrogen results.
- Authors:
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Argonne National Lab.(ANL), Lemont, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1505247
- Alternate Identifier(s):
- OSTI ID: 1505160; OSTI ID: 1506417
- Report Number(s):
- JLAB-THY-18-2804; arXiv:1809.06373; DOE/OR/23177-4544
Journal ID: ISSN 2469-9985; PRVCAN; 044303
- Grant/Contract Number:
- AC05-06OR23177; AC02-06CH11357; FPA2016-77313-P; FPA2016-75654-C2-2-P
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. C
- Additional Journal Information:
- Journal Name: Physical Review. C Journal Volume: 99 Journal Issue: 4; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Alarcón, J. M., Higinbotham, D. W., Weiss, C., and Ye, Zhihong. Proton charge radius extraction from electron scattering data using dispersively improved chiral effective field theory. United States: N. p., 2019.
Web. doi:10.1103/PhysRevC.99.044303.
Alarcón, J. M., Higinbotham, D. W., Weiss, C., & Ye, Zhihong. Proton charge radius extraction from electron scattering data using dispersively improved chiral effective field theory. United States. https://doi.org/10.1103/PhysRevC.99.044303
Alarcón, J. M., Higinbotham, D. W., Weiss, C., and Ye, Zhihong. Fri .
"Proton charge radius extraction from electron scattering data using dispersively improved chiral effective field theory". United States. https://doi.org/10.1103/PhysRevC.99.044303.
@article{osti_1505247,
title = {Proton charge radius extraction from electron scattering data using dispersively improved chiral effective field theory},
author = {Alarcón, J. M. and Higinbotham, D. W. and Weiss, C. and Ye, Zhihong},
abstractNote = {We extract the proton charge radius from the elastic form factor data using a theoretical framework combining chiral effective field theory and dispersion analysis. Complex analyticity in the momentum transfer correlates the behavior of the spacelike form factor in different Q2 regions and permits the use of data up to Q2 ~ 0.5 GeV2 in constraining the radius. The predictive theory describes the data with the same accuracy as current descriptive models (global fits). We obtain a radius of 0.844(7) fm, consistent with the high-precision muonic hydrogen results.},
doi = {10.1103/PhysRevC.99.044303},
journal = {Physical Review. C},
number = 4,
volume = 99,
place = {United States},
year = {Fri Apr 05 00:00:00 EDT 2019},
month = {Fri Apr 05 00:00:00 EDT 2019}
}
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https://doi.org/10.1103/PhysRevC.99.044303
https://doi.org/10.1103/PhysRevC.99.044303
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Cited by: 40 works
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Figures / Tables:
FIG. 1: Light shaded bands between solid lines (labeled “Theory”): DIχEFT predictions of the proton charge FF $G^{p}_{E}$ (Q2) for several values of the proton radius, r$^{p}_{E}$ = (0.80, 0.82, 0.84, 0.86, 0.88, 0.90) fm (the values are indicated on the panels). The bands show the theoretical uncertainty resulting frommore »
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.