Single spin asymmetries in semi-inclusive dis at HERMES

Naomi C.R. Makins, Michael Düren

Research output: Contribution to journalConference articlepeer-review


The new high statistics deuterium data set of HERMES shows significant semi-inclusive single spin asymmetries of identified pions and kaons. The asymmetries observed on the deuterium target differ from those measured on the proton target. The appearance of non-zero single spin asymmetries can be explained in terms of a non-zero transversity distribution combined with a non-zero Collins fragmentation function. However, the detailed interpretation of the data is model dependent as it turns out that the asymmetries are dominated by higher-twist effects. HERMES data that are currently being taken on a transversely polarized target will allow for a model-independent extraction of the transversity distribution.

Original languageEnglish (US)
Pages (from-to)3737-3742
Number of pages6
JournalActa Physica Polonica B
Volume33 II
Issue number11
StatePublished - Nov 2002
EventX International Workshop on Deep Inelastic Scattering (DIS 2002) - Cracow, Poland
Duration: Apr 30 2002May 4 2002

ASJC Scopus subject areas

  • General Physics and Astronomy


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