Measurement of azimuthal asymmetries of the unpolarized cross section at HERMES
Francesca Giordano, Rebecca Lamb (On behalf of the HERMES, Collaboration)
TL;DR
This paper presents a detailed multi-dimensional analysis of azimuthal asymmetries in unpolarized SIDIS at HERMES, revealing flavor-dependent insights into quark transverse momenta and spin-orbit effects.
Contribution
It introduces a novel multi-dimensional extraction method for azimuthal asymmetries, enabling flavor separation and model discrimination in SIDIS data analysis.
Findings
Flavor-dependent quark transverse momentum information obtained.
Discrimination between theoretical models achieved.
Enhanced understanding of spin-orbit correlations in nucleons.
Abstract
A multi-dimensional (x, y, z, P_{h\perp}) extraction of cos\phi_h and cos2\phi_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.
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