Spin Structure of the Nucleon

✍ Scribed by Pasquale Di Nezza

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 969 KB
• Volume: 152
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/j.nuclphysbps.2005.08.019

✦ Synopsis

HERMES is a second generation experiment to study the spin structure of the nucleon, in which measurements of the spin dependent properties of semi-inclusive deep-inelastic lepton scattering are emphasized. The first experimental results from measurements of single-spin asymmetries for pions and kaons in deep-inelastic scattering with transverse target polarization are discussed. Longitudinally polarized beam and target data provide information on the flavor decomposition of the polarized quark distributions in the nucleon and a first glimpse of the gluon polarization. Moreover, first preliminary results for the unpolarized ep --, en~ + total cross section are presented and compared to Generalized Parton Distribution calculations.