





Item type: | Article | ||||
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Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | AMER PHYSICAL SOC | ||||
Place of Publication: | COLLEGE PK | ||||
Volume: | 84 | ||||
Number of Issue or Book Chapter: | 18 | ||||
Page Range: | pp. 4047-4051 | ||||
Date: | 2000 | ||||
Institutions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer | ||||
Identification Number: |
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Keywords: | FRAGMENTATION FUNCTIONS; ANALYZING POWER; DISTRIBUTIONS; LEPTOPRODUCTION; NUCLEONS; BEAM; | ||||
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: | 74301 |
Abstract
Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distribution in the azimuthal angle phi of the pion relative to the lepton scattering plane was formed for pi(+) electroproduction on a longitudinally polarized hydrogen target. The corresponding analyzing power in the sin phi ...

Abstract
Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distribution in the azimuthal angle phi of the pion relative to the lepton scattering plane was formed for pi(+) electroproduction on a longitudinally polarized hydrogen target. The corresponding analyzing power in the sin phi moment of the cross section is 0.022 +/- 0.005 +/- 0.003. This result can be interpreted as the effect of terms in the cross section involving chiral-odd spin distribution functions in combination with a chiral-odd fragmentation function that is sensitive to the transverse polarization of the fragmenting quark.
Metadata last modified: 19 Dec 2024 15:58