Sivers effect for pion and kaon production in semi-inclusive deep inelastic scattering M. Anselmino, M. Boglione, U. D’Alesio, A. Kotzinian, S. Melis, F. Murgia, A. Prokudin and C. Türk Eur. Phys. J. A, 39 1 (2009) 89-100 Published online: 24 December 2008 DOI: 10.1140/epja/i2008-10697-y