Azimuthal asymmetries in the unpolarized SIDIS cross section at COMPASS
Giulio Sbrizzai (for the COMPASS Collaboration)
TL;DR
This paper reports on measurements of azimuthal asymmetries in unpolarized SIDIS cross sections at COMPASS, providing insights into the nucleon's transverse momentum structure and quark correlations.
Contribution
It presents new experimental results on azimuthal asymmetries in SIDIS from COMPASS, exploring their dependence on kinematic variables and hadron charge.
Findings
Azimuthal asymmetries observed for positive and negative hadrons.
Dependence of asymmetries on kinematic variables analyzed.
Results contribute to understanding nucleon transverse momentum structure.
Abstract
The study of the spin structure of the nucleon and of the effects rising from the quarks transverse momentum are part of the scientific program of COMPASS, a fixed target experiment at the CERN SPS. The azimuthal asymmetries which appear in the cross-section of SIDIS off unpolarized targets can give insights on the intrinsic momentum structure of the nucleon and on the possible correlation between transverse spin and transverse momentum of the quarks. Here we present the new results for these asymmetries obtained from the COMPASS data collected with a 160 GeV/c positive muon beam impinging on a target. The asymmetries are measured for both positive and negative hadrons, and their dependence on several kinematical variable has been studied
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