Transversity Signals in Two-Hadron Production at COMPASS

Details Transversity Signals in Two-Hadron Production at COMPASS Transversity Signals in Two-Hadron Production at COMPASS

2007-06-11

arxiv.org/abs/0706.1459v2

Proc. of DIS 2007, Atlantis Press

Physics

High Energy Physics

High Energy Physics - Experiment

Proceedings of DIS2007, Munich

Scientific paper

10.3360/dis.2007.105

New results on single spin asymmetries of identified charged pion and kaon pairs produced in deep-inelastic scattering of muons on a transversely polarized 6LiD target are presented. The data were taken in the years 2003 and 2004 with the COMPASS spectrometer at CERN with a 160 GeV muon beam from the CERN SPS accelerator. The asymmetries can be interpreted in the context of transversity as a convolution of the chiral-odd interference fragmentation function $H_1^\sphericalangle$ with the transverse spin distribution of quarks $\Delta_Tq(x)$. The measured azimuthal target spin asymmetries on the deuteron are compatible with zero within a small statistical error of about 1%.

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