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Journal or Publication Title: | Physics Letters B | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
Place of Publication: | AMSTERDAM | ||||
Volume: | 693 | ||||
Number of Issue or Book Chapter: | 1 | ||||
Page Range: | pp. 11-16 | ||||
Date: | 2010 | ||||
Institutions: | Physics > Institute of Theroretical Physics | ||||
Identification Number: |
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Keywords: | HERMES; COLLINS; LEPTOPRODUCTION; DISTRIBUTIONS; ASYMMETRIES; NUCLEON; QUARKS; TARGET; QCD; Semi-inclusive DIS; Single-spin asymmetries; Polarized structure functions; Transversity; Collins function | ||||
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: | 65769 |
Abstract
Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydrogen target. The dependence of the cross section on the azimuthal angles of the target polarization (phi s) and the produced hadron (phi) is found to have a substantial sin(phi +phi s) modulation for the production of ...

Abstract
Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydrogen target. The dependence of the cross section on the azimuthal angles of the target polarization (phi s) and the produced hadron (phi) is found to have a substantial sin(phi +phi s) modulation for the production of pi(+), pi(-) and K(+). This Fourier component can be interpreted in terms of non-zero transversity distribution functions and non-zero favored and disfavored Collins fragmentation functions with opposite sign. For pi(0) and K(-) production the amplitude of this Fourier component is consistent with zero. (C) 2010 Elsevier B.V. All rights reserved.
Metadata last modified: 19 Dec 2024 11:32