Recoil polarization measurements of the proton electromagnetic form factor ratio to high momentum transfer.
Journal Article
·
· Physical Review Letters
- et al.
Among the most fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing the strong interaction dynamics of the nucleon's quark constituents; indeed, recent proton data have attracted intense theoretical interest. In this Letter, we report new measurements of the proton electromagnetic form factor ratio using the recoil polarization method, at momentum transfers Q{sup 2} = 5.2, 6.7, and 8.5 GeV{sup 2}. By extending the range of Q{sup 2} for which G{sub E}{sup p} is accurately determined by more than 50%, these measurements will provide significant constraints on models of nucleon structure in the nonperturbative regime.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1039512
- Report Number(s):
- ANL/PHY/JA-66726; PRLTAO; TRN: US1202159
- Journal Information:
- Physical Review Letters, Vol. 104, Issue 24; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- ENGLISH
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