A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering
A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH\(_{3}\)) targets are presented. They provide independent access to the transversity distribution functions through the measurement of the Collins asymmetry in si...
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Published in | arXiv.org |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Paper Journal Article |
Language | English |
Published |
Ithaca
Cornell University Library, arXiv.org
30.01.2014
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Subjects | |
Online Access | Get full text |
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Summary: | A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH\(_{3}\)) targets are presented. They provide independent access to the transversity distribution functions through the measurement of the Collins asymmetry in single hadron production. The data were taken in the year \(2010\) with the COMPASS spectrometer using a \(160\,\mbox{GeV}/c\) muon beam of the CERN SPS, increasing by a factor of about three the available statistics of the previously published data taken in the year \(2007\). The measured sizeable asymmetry is in good agreement with the published data. An approximate equality of the Collins asymmetry and the dihadron asymmetry is observed, suggesting a common physical mechanism in the underlying fragmentation. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1401.7873 |