Published January 19, 2007
| Version v1
Journal article
Precision Measurements of the Nucleon Strange Form Factors at Q2∼0.1 GeV2
Creators
- Acha, A.1
- Markowitz, P.1
- Aniol, K. A.2
- Margaziotis, D. J.2
- Armstrong, D. S.3
- Averett, T.3
- Bailey, S. L.3
- Finn, J. M.3
- Fuchs, S. A.3
- Glesener, L. E.3
- Grimm, K.3
- Holmstrom, T.3
- Katich, J.3
- Kelleher, A.3
- Moffit, B.3
- Phillips, S. K.3
- Sulkosky, V.3
- Arrington, J.4
- Barber, J.5
- Fuoti, K.5
- and others
- HAPPEX Collaboration
- 1. Florida International University, Miami, Florida 33199 (United States)
- 2. California State University, Los Angeles, Los Angeles, California 90032 (United States)
- 3. College of William and Mary, Williamsburg, Virginia 23187 (United States)
- 4. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 5. University of Massachusetts Amherst, Amherst, Massachusetts 01003 (United States)
Description
We report new measurements of the parity-violating asymmetry APV in elastic scattering of 3 GeV electrons off hydrogen and 4He targets with <θlab>≅6.0 deg. . The 4He result is APV=(+6.40±0.23(stat)±0.12(syst))x10-6. The hydrogen result is APV=(-1.58±0.12(stat)±0.04(syst))x10-6. These results significantly improve constraints on the electric and magnetic strange form factors GEs and GMs. We extract GEs=0.002±0.014±0.007 at =0.077 GeV2, and GEs+0.09GMs=0.007±0.011±0.006 at =0.109 GeV2, providing new limits on the role of strange quarks in the nucleon charge and magnetization distributions
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.98.032301;
- arXiv
- arXiv:nucl-ex/0609002v2;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 98
- Journal Issue
- 3
- Journal Page Range
- p. 032301-032301.5
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38024578
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ACCURACY; ASYMMETRY; ELASTIC SCATTERING; ELECTRON BEAMS; FORM FACTORS; GEV RANGE 01-10; HELIUM 4 TARGET; HYDROGEN 1 TARGET; MAGNETIZATION; NUCLEONS; PARITY; S QUARKS; STRANGENESS
- Descriptors DEC
- BARYONS; BEAMS; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; LEPTON BEAMS; PARTICLE BEAMS; PARTICLE PROPERTIES; QUARKS; SCATTERING; STRANGE PARTICLES; TARGETS
Optional Information
- Notes
- (c) 2007 The American Physical Society
- Collaborations
- HAPPEX Collaboration