出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：An extraction of azimuthal cosfh and cos2fh modulations of pion distributions in unpolarized semi-inclusive deep-inelastic scattering has been performed at HERMES by means of a multidimensional (x,y, z,Ph⊥) unfolding procedure to disentangle the azimuthal dependence of the cross section from instrumental and radiative contributions. Results are presented for hydrogen and deuterium targets and separately for positively and negatively charged pions to access flavor dependent information about quark intrinsic transverse momenta and spin-orbit correlations.
