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arXiv · 1111.1633

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

Jian-Hua Gao·Andreas Schäfer·Jian Zhou
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Abstract

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 $\cos ϕ$ 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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Jian-Hua Gao, Andreas Schäfer, Jian Zhou. 2011-11-07. Azimuthal asymmetry in SIDIS off nuclei as probe for $\hat q$. https://doi.org/10.1103/physrevd.85.074027

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