26-31 July 2021
Mexico City
Mexico/General timezone
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Contribution Leading parallel

Mexico City -
QCD and Hadron Structure

Probing transversity by measuring $\Lambda$ polarisation in SIDIS


  • Mr. Andrea MORETTI

Primary authors


The transversity PDF $h_1^q$ can be accessed in SIDIS by measuring the polarisation of final-state hadrons produced off transversely polarised nucleons. We present the COMPASS results on the transversity-induced polarisation of $\Lambda$ and $\bar{\Lambda}$ hyperons produced off transversely polarised protons. Within the experimental uncertainties, no significant deviation from zero is observed. The results are discussed taking into account previous experimental results on $h_1^u$ and $h_1^d$.