Use of the Husimi distribution for nucleon tomography
arXiv:1412.4591 · doi:10.1016/j.nuclphysa.2015.04.005
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-.
arXiv comment12 pages, 6 figures; improved discussion about the positivity of the Husimi distribution, to be published in Nuclear Physics A
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- Modelling the nucleon structure
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- Sivers and Boer-Mulders GTMDs in Light-front Holographic Quark-diquark Model
- Quark Wigner distribution of the pion meson in light-cone quark model
- Wigner distributions for an electron
- Husimi distribution for nucleon tomography