Azimuthal asymmetry in SIDIS off nuclei as probe for $\hat q$

Details Azimuthal asymmetry in SIDIS off nuclei as probe for $\hat q$ Azimuthal asymmetry in SIDIS off nuclei as probe for $\hat q$

2011-11-07

arxiv.org/abs/1111.1633v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages

Scientific paper

The energy loss parameter $\hat q$ is one of the fundamental transport parameters of hadronic matter. Using the twist-4 collinear approach, we show that the $\cos \phi$ azimuthal asymmetry in unpolarized semi-inclusive deeply inelastic scattering (SIDIS) off a large nucleus at intermediate transverse momentum is a sensitive observable for its determination. The effect is due to the suppression of the azimuthal asymmetry by final-state multiple scattering.

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