








Item type: | Article | ||||
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Journal or Publication Title: | The European Physical Journal C | ||||
Publisher: | SPRINGER | ||||
Place of Publication: | NEW YORK | ||||
Volume: | 72 | ||||
Number of Issue or Book Chapter: | 3 | ||||
Date: | 2012 | ||||
Institutions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer | ||||
Identification Number: |
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Keywords: | DEEP-INELASTIC-SCATTERING; ELECTRON STORAGE-RING; SUM-RULES; HERA; POLARIZATION; POLARIMETER; TARGET; | ||||
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: | 63962 |
Abstract
A measurement of the virtual-photon asymmetry A(2)(x, Q(2)) and of the spin-structure function g(2)(x, Q(2)) of the proton are presented for the kinematic range 0.004 < x < 0.9 and 0.18 GeV2 < Q(2) < 20 GeV2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a ...

Abstract
A measurement of the virtual-photon asymmetry A(2)(x, Q(2)) and of the spin-structure function g(2)(x, Q(2)) of the proton are presented for the kinematic range 0.004 < x < 0.9 and 0.18 GeV2 < Q(2) < 20 GeV2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g(2)(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x(2) moment of the twist-3 contribution to g(2)(x) is found to be compatible with zero.
Metadata last modified: 19 Dec 2024 09:42