Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-07-06
Physics
High Energy Physics
High Energy Physics - Experiment
To appear in the proceedings of 17th International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2009), Madr
Scientific paper
Measuring single spin asymmetries in semi-inclusive deep-inelastic scattering (SIDIS) on a transversely polarized target gives a handle to investigate the transversity distribution and transverse momentum dependent distribution functions. In the years 2002, 2003 and 2004 COMPASS took data with a transversely polarized deuteron target and in the year 2007 with a proton target. Three channels for accessing transversity have been analysed. Azimuthal asymmetries in the production of hadron pairs, involving the polarized two hadron interference fragmentation function, azimuthal asymmetries in the production of single hadrons, involving the Collins fragmentation function and polarization measurements of spin-${1/2} \hbar$ particles like $\Lambda$-Hyperons via their self analyzing weak decay. In the following we will focus on new preliminary results from the analysis of two hadron pair asymmetries measured with the proton target.
COMPASS collaboration for the
Wollny Heiner
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