Parity-violating asymmetries in elastic e(vector sign)p scattering in the chiral quark-soliton model: Comparison with the A4, G0, HAPPEX and SAMPLE experiments

Journal Article · Fri Sep 01 04:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.054011· OSTI ID:20871099

Silva, Antonio ^[1]; Kim, Hyun-Chul ^[2]; Urbano, Diana ^[3]; Goeke, Klaus ^[4]

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1. Departamento de Fisica and Centro de Fisica Computacional, Universidade de Coimbra, P-3000 Coimbra (Portugal)
2. Department of Physics and Nuclear Physics and Radiation Technology Institute (NuRI), Pusan National University, 609-735 Busan (Korea, Republic of)
3. Faculdade de Engenharia da Universidade do Porto, R. Dr. Roberto Frias s/n, P-4200-465 Porto (Portugal)
4. Institut fuer Theoretische Physik II, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

We investigate parity-violating electroweak asymmetries in the elastic scattering of polarized electrons off protons within the framework of the chiral quark-soliton model ({chi}QSM). We use as input the former results of the electromagnetic and strange form factors and newly calculated SU(3) axial-vector form factors, all evaluated with the same set of four parameters adjusted several years ago to general mesonic and baryonic properties. Based on this scheme, which yields positive electric and magnetic strange form factors with {mu}{sub s}=(0.08-0.13){mu}{sub N}, we determine the parity-violating asymmetries of elastic polarized electron-proton scattering. The results are in a good agreement with the data of the A4, HAPPEX, and SAMPLE experiments and reproduce the full Q{sup 2} range of the G0 data. We also predict the parity-violating asymmetries for the backward G0 experiment.

• OSTI ID: 20871099
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CHIRALITY
COMPARATIVE EVALUATIONS
ELASTIC SCATTERING
ELECTRON BEAMS
ELECTRON-PROTON INTERACTIONS
ELECTRONS
FORM FACTORS
P INVARIANCE
PARITY
POLARIZED BEAMS
PROTONS
QUARK MODEL
QUARKS
SOLITONS
SU-3 GROUPS