A precision measurement of the neutron2: probing the color force
Creators
- 1. Temple Univ., Philadelphia, PA (United States)
Description
The g2 nucleon spin-dependent structure function measured in electron deep inelastic scattering contains information beyond the simple parton model description of the nucleon. It provides insight into quark-gluon correlations and a path to access the confining local color force a struck quark experiences just as it is hit by the virtual photon due to the remnant di-quark. The quantity d2, a measure of this local color force, has its information encoded in an x2 weighted integral of a linear combination of spin structure functions g1 and g2 and thus is dominated by the valence-quark region at large momentum fraction x. To date, theoretical calculations and experimental measurements of the neutron d2 differ by about two standard deviations. Therefore, JLab experiment E06-014, performed in Hall A, made a precision measurement of this quantity at two mean four momentum transfers values of 3.21 and 4.32 GeV2. Double spin asymmetries and absolute cross-sections were measured in both DIS and resonance regions by scattering longitudinally polarized electrons at beam energies of 4.74 and 5.89 GeV from a longitudinally and transversely polarized 3He target. Results for the absolute cross-sections and spin structure functions on 3He will be presented in the dissertation, as well as results for the neutron d2 and extracted color forces
Availability note (English)
Available from https://misportal.jlab.org/ul/publications/downloadFile.cfm?pub_id=13193; PURL: http://www.osti.gov/servlets/purl/1133070/Additional details
Identifiers
Publishing Information
- Imprint Pagination
- 560 p.
- Report number
- JLAB-PHY--14-1888
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 45110628
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Thesis, Non-conventional Literature
- Descriptors DEI
- ACCURACY; ASYMMETRY; BEAMS; CEBAF ACCELERATOR; COLOR MODEL; CORRELATIONS; COST; CROSS SECTIONS; DATA; DATES; DEEP INELASTIC SCATTERING; ECONOMICS; ELECTRONS; FOUR MOMENTUM TRANSFER; GEV RANGE; GLUON MODEL; GLUONS; HELIUM 3; HIGH ROOMS; INTEGRALS; NEUTRONS; PHOTONS; PROBES; QUARKS; SOCIO-ECONOMIC FACTORS; SPIN; STANDARDS; STRUCTURE FUNCTIONS; VALENCE; WEIGHT
- Descriptors DEC
- ACCELERATORS; ANGULAR MOMENTUM; BARYONS; BOSONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; ENERGY RANGE; EVEN-ODD NUCLEI; FERMIONS; FOOD; FRUITS; FUNCTIONS; HADRONS; HELIUM ISOTOPES; INELASTIC SCATTERING; INFORMATION; INSTITUTIONAL FACTORS; INTERACTIONS; ISOTOPES; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTONS; LIGHT NUCLEI; LINEAR ACCELERATORS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MOMENTUM TRANSFER; NUCLEI; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; QUARK MODEL; SCATTERING; STABLE ISOTOPES
Optional Information
- Contract/Grant/Project number
- AC05-06OR23177
- Funding organization
- USDOE Office of Science, Nuclear Physics (United States)
- Secondary number(s)
- OSTIID--1133070; DOE/OR/23177--3080