Don’t forget to measure Δs

  • Stephen F. Pate
Conference paper


This talk explores our lack of knowledge of the strange quark contribution to the nucleon spin, Δs. Data on Δs from inclusive and semi-inclusive polarized deep-inelastic scattering will be reviewed, followed by a discussion of how the ongoing program of parity-violating elastic electron-nucleon scattering experiments, that seek out the strange electromagnetic form factors of the nucleon, need to have an estimate for the strange axial form factor to carry out that program, and how the value of Δs extracted from the DIS experiments has filled that role. It is shown that elastic vp, v̄p, and parity-violating ep data can be combined to extract the strange electric, magnetic and axial form factors simultaneously. A proposed experiment that could address this important issue if briefly previewed.


Form Factor Axial Charge Nucleon Spin E734 Data Axial Form Factor 
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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Stephen F. Pate
    • 1
  1. 1.Physics DepartmentNew Mexico State UniversityLas CrucesUSA

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