Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-02-03
Physics
High Energy Physics
High Energy Physics - Experiment
6 pages, 7 figures, Prepared for Advanced Studies Institute: Symmetries and Spin (SPIN-Praha-2008), Prague, Czech Republic, 20
Scientific paper
Azimuthal asymmetries in unpolarized SIDIS can be used to probe the transverse momentum of the quarks inside the nucleon. Furthermore they give access to the so-far unmeasured Boer-Mulders function. We report on the extraction of these asymmetries from the COMPASS data taken with a 160 GeV/c $\mu ^+$ beam impinging on a deuteron target. This asymmetries have been extracted separately for positive and negative hadrons, and the results have been compared with theoretical predictions.
for the COMPASS Collaboration
Sbrizzai Giulio
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