Husimi distribution for nucleon tomography
1 Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
2 Department of Physics, Kyoto University, Kyoto 606-8502, Japan
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Published online: 21 March 2016
We define the QCD Husimi distribution as the phase space distribution of partons inside the nucleon. Compared to the more well-known Wigner distribution, the Husimi distribution is better behaved and positive. It thus allows for a probabilistic interpretation and can be used to define the ‘entropy’ of the nucleon as a measure of complexity of the partonic structure. A possible connection to the Color Glass Condensate approach at small-x is also discussed.
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