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arXiv · 1412.4591

Use of the Husimi distribution for nucleon tomography

Yoshikazu Hagiwara·Yoshitaka Hatta
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Abstract

In the context of nucleon structure, the Wigner distribution has been commonly used to visualize the phase-space distribution of quarks and gluons inside the nucleon. However, the Wigner distribution does not allow for a probabilistic interpretation because it takes negative values. In pursuit of a positive phase-space distribution in QCD, we introduce the Husimi distribution and demonstrate its advantages via a simple one-loop example. We also comment on a possible connection to the semiclassical approach to saturation physics at small-$x$.

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Yoshikazu Hagiwara, Yoshitaka Hatta. 2015-04-10. Use of the Husimi distribution for nucleon tomography. https://doi.org/10.1016/j.nuclphysa.2015.04.005

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