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Measurement of the Neutron F-2 Structure Function via Spectator Tagging with CLAS
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2012, 108, pp.142001. ⟨10.1103/PhysRevLett.108.142001⟩, Physical Review Letters, 2012, 108, pp.142001. ⟨10.1103/PhysRevLett.108.142001⟩
- Publication Year :
- 2012
- Publisher :
- American Physical Society, 2012.
-
Abstract
- We report on the first measurement of the F2 structure function of the neutron from semi-inclusive scattering of electrons from deuterium, with low-momentum protons detected in the backward hemisphere. Restricting the momentum of the spectator protons to < 100 MeV and their angles to < 100 degrees relative to the momentum transfer allows an interpretation of the process in terms of scattering from nearly on-shell neutrons. The F2n data collected cover the nucleon resonance and deep-inelastic regions over a wide range of Bjorken x for 0.65 < Q2 < 4.52 GeV2, with uncertainties from nuclear corrections estimated to be less than a few percent. These measurements provide the first determination of the neutron to proton structure function ratio F2n/F2p at 0.2 < x < 0.8 with little uncertainty due to nuclear effects.<br />6 pages, 3 pages
- Subjects :
- Proton
Nuclear Theory
FOS: Physical sciences
General Physics and Astronomy
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
NUCLEAR-STRUCTURE
PROTON
01 natural sciences
Neutron time-of-flight scattering
High Energy Physics - Experiment
Settore FIS/04 - Fisica Nucleare e Subnucleare
Nuclear physics
High Energy Physics - Experiment (hep-ex)
DUALITY
0103 physical sciences
PION
Neutron cross section
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Neutron
Nuclear Experiment (nucl-ex)
010306 general physics
Nuclear Experiment
Physics
010308 nuclear & particles physics
Scattering
Momentum transfer
INELASTIC ELECTRON-SCATTERING
STRUCTURE-FUNCTION RATIO
DEUTERON
MODEL
FORM
Deuterium
Nucleon
Subjects
Details
- Language :
- English
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2012, 108, pp.142001. ⟨10.1103/PhysRevLett.108.142001⟩, Physical Review Letters, 2012, 108, pp.142001. ⟨10.1103/PhysRevLett.108.142001⟩
- Accession number :
- edsair.doi.dedup.....ef8cdc75f0b63dd04aa3078bebaae35a