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Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton Scattering
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2007, 99, pp.092301. ⟨10.1103/PhysRevLett.99.092301⟩
- Publication Year :
- 2007
- Publisher :
- American Physical Society, 2007.
-
Abstract
- We have measured the beam-normal single-spin asymmetry in elastic scattering of transversely-polarized 3 GeV electrons from unpolarized protons at Q^2 = 0.15, 0.25 (GeV/c)^2. The results are inconsistent with calculations solely using the elastic nucleon intermediate state, and generally agree with calculations with significant inelastic hadronic intermediate state contributions. A_n provides a direct probe of the imaginary component of the 2-gamma exchange amplitude, the complete description of which is important in the interpretation of data from precision electron-scattering experiments.<br />5 pages, 3 figures, submitted to Physical Review Letters; shortened to meet PRL length limit, clarified some text after referee's comments
- Subjects :
- electromagnetic processes and properties
media_common.quotation_subject
Elastic electron scattering
Hadron
General Physics and Astronomy
FOS: Physical sciences
Electron
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
01 natural sciences
Asymmetry
Nuclear physics
High Energy Physics - Phenomenology (hep-ph)
0103 physical sciences
Nuclear Experiment (nucl-ex)
010306 general physics
Nuclear Experiment
Spin-½
media_common
Physics
Elastic scattering
protons
010308 nuclear & particles physics
Scattering
neutrons
High Energy Physics - Phenomenology
Amplitude
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
elastic and compton scattering
25.30.Bf, 13.60.Fz, 13.40.-f, 14.20.Dh
High Energy Physics::Experiment
Atomic physics
Nucleon
Subjects
Details
- Language :
- English
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2007, 99, pp.092301. ⟨10.1103/PhysRevLett.99.092301⟩
- Accession number :
- edsair.doi.dedup.....c5367e715c0b903bb043d1df4f3fddec