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arXiv · hep-ph/0002268

Transversity Distribution and Polarized Fragmentation Function from Semi-inclusive Pion Electroproduction

V. A. Korotkov·W. -D. Nowak·K. A. Oganessyan
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Abstract

A method is discussed to determine the hitherto unknown u-quark transversity distribution from a planned HERMES measurement of a single-spin asymmetry in semi-inclusive pion electroproduction off a transversely polarized target. Assuming u-quark dominance, the measurement yields the shapes of the transversity distribution and of the ratio of a polarized and the unpolarized u-quark fragmentation functions. The unknown relative normalization can be obtained by identifying the transversity distribution with the well-known helicity distribution at large x. The systematic uncertainty of the method is dominated by the assumption of u-quark dominance.

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V. A. Korotkov, W. -D. Nowak, K. A. Oganessyan. 2001-01-22. Transversity Distribution and Polarized Fragmentation Function from Semi-inclusive Pion Electroproduction. https://doi.org/10.1007/s100520100564

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