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arXiv · 1011.1213

Exploring quark transverse momentum distributions with lattice QCD

Bernhard U. Musch·Philipp Hägler·John W. Negele·Andreas Schäfer
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Abstract

We discuss in detail a method to study transverse momentum dependent parton distribution functions (TMDs) using lattice QCD. To develop the formalism and to obtain first numerical results, we directly implement a bi-local quark-quark operator connected by a straight Wilson line, allowing us to study T-even, "process-independent" TMDs. Beyond results for x-integrated TMDs and quark densities, we present a study of correlations in x and transverse momentum. Our calculations are based on domain wall valence quark propagators by the LHP collaboration calculated on top of gauge configurations provided by MILC with 2+1 flavors of asqtad-improved staggered sea quarks.

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Bernhard U. Musch, Philipp Hägler, John W. Negele, Andreas Schäfer. 2012-07-16. Exploring quark transverse momentum distributions with lattice QCD. https://doi.org/10.1103/physrevd.83.094507

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