







Item type: | Article | ||||
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Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | AMER PHYSICAL SOC | ||||
Place of Publication: | COLLEGE PK | ||||
Volume: | 92 | ||||
Number of Issue or Book Chapter: | 1 | ||||
Date: | 2004 | ||||
Institutions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer | ||||
Identification Number: |
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Keywords: | HERMES POLARIZED HYDROGEN; FRAGMENTATION FUNCTIONS; PARTON DISTRIBUTIONS; QCD ANALYSIS; TARGET; PROTON; ASYMMETRIES; POLARIMETER; PIONS; HERA; | ||||
Dewey Decimal Classification: | 500 Science > 530 Physics | ||||
Status: | Published | ||||
Refereed: | Yes, this version has been refereed | ||||
Created at the University of Regensburg: | Yes | ||||
Item ID: | 71805 |
Abstract
Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with reanalyzed previous data for identified pions from a hydrogen target. ...

Abstract
Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with reanalyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors. A recently predicted flavor asymmetry in the polarization of the light quark sea appears to be disfavored by the data.
Metadata last modified: 19 Dec 2024 15:18