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arXiv · 1802.06980

Low-virtuality leptoproduction of open-charm as a probe of the gluon Sivers function

Rohini M. Godbole·Abhiram Kaushik·Anuradha Misra
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Abstract

We propose low-virtuality leptoproduction of open-charm, $p^\uparrow l\to D^0+X$, as a probe of the gluon Sivers function (GSF). At leading-order, this process directly probes the gluon content of the proton, making detection of a trasverse single-spin asymmetry in the process a clear indication of a non-zero GSF. Considering the kinematics of the proposed future Electron-Ion Collider (EIC), we present predictions for asymmetry using fits of the GSF available in literature. We also study the asymmetry at the level of muons produced in D-meson decays and find that the asymmetry is preserved therein as well.

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Rohini M. Godbole, Abhiram Kaushik, Anuradha Misra. 2018-02-20. Low-virtuality leptoproduction of open-charm as a probe of the gluon Sivers function. https://doi.org/10.1007/s00601-018-1349-z

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