Izlaganje sa skupa
Flavor separated quark polarizations at HERMES
Wolfgang Lorenzon (on behalf of the HERMES collaboration)
; Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109-1120, USA
Sažetak
Recent HERMES results are presented on the flavor decomposition of the sea quark helicity distributions in the nucleon from semi-inclusive deep inelastic scattering. For the first time, a five component decomposition of quark helicity distributions using flavor tagging has been performed. The helicity distributions of the up and down quarks confirm the results obtained from inclusive deep inelastic scattering, however, there is no evidence for either a negative strange quark polarization or for a flavor asymmetry in the light sea polarization.
Ključne riječi
polarized lepton-nucleon interactions; polarized quark and anti-quark distributions
Hrčak ID:
305646
URI
Datum izdavanja:
1.3.2004.
Posjeta: 331 *