Measurement of azimuthal asymmetries of the unpolarized cross section at HERMES
Francesca Giordano, Rebecca Lamb
Abstract
A multi-dimensional (x, y, z, P_{h\perp}) extraction of cosφ_h and cos2φ_h azimuthal asymmetries of unpolarized Semi-Inclusive Deep Inelastic Scattering at HERMES is discussed. The use of data taken with hydrogen and deuterium targets and the separation of positive and negative hadrons allow to access flavor-dependent information about quark intrinsic transverse momenta and spin-orbit correlations. This flavor sensitivity allows for a discrimination between theoretical models in the HERMES kinematic regime.