- Conference date: 9-14 September 2002
- Location: Upton, New York (USA)
During the last years the HERMES collaboration has measured inclusive and semi‐inclusive double‐spin asymmetries in deep inelastic scattering on polarised hydrogen and deuterium targets in the kinematic range 0.02 < x < 0.6 and 1 GeV2 < Q 2 < 10 GeV2. With the installation of a Ring Imaging Čerenkov detector in 1998, charged pions and kaons could be identified and for the first time allowed to separately determine the polarisations of all valence and sea quark distributions. Of special interest are the difference between the polarisation of the u‐ and d‐ sea quarks where various phenomenological models predict a significant flavour asymmetry and the polarisation of the strange quarks which have been suggested to have a negative contribution to the nucleon spin.
- Scattering measurements
- Classical spin models
- Elementary particle detectors
- Image sensors
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