New data on the Sivers azimuthal asymmetry measured in semi-inclusive deep- inelastic scattering processes have recently been released by the COMPASS Collaboration at CERN. Their increased precision and their particular binning, in terms of Q^2 as well as x, motivates a new extraction of the Sivers function, within the framework of a simple and transparent parametrization. Signals of TMD effects visible in the Sivers asymmetries are critically assessed. A thorough study of the uncertainties affecting the extracted Sivers function is presented, including the low-x and large-x regions.

Assessing signals of TMD physics in SIDIS azimuthal asymmetries and in the extraction of the Sivers function

Boglione, M.
;
D'ALESIO, Umberto;Flore, C.;Gonzalez-Hernandez, J. O.
2018-01-01

Abstract

New data on the Sivers azimuthal asymmetry measured in semi-inclusive deep- inelastic scattering processes have recently been released by the COMPASS Collaboration at CERN. Their increased precision and their particular binning, in terms of Q^2 as well as x, motivates a new extraction of the Sivers function, within the framework of a simple and transparent parametrization. Signals of TMD effects visible in the Sivers asymmetries are critically assessed. A thorough study of the uncertainties affecting the extracted Sivers function is presented, including the low-x and large-x regions.
2018
2018
7
1
28
http://link.springer.com/journal/13130
Deep Inelastic Scattering (Phenomenology); Phenomenological Models; Nuclear and High Energy Physics
Boglione, M.; D’Alesio, U.; Flore, C.; Gonzalez-Hernandez, J.O.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1672369
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