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Double parton distributions in the pion in the Nambu–Jona-Lasinio model

A preprint version of the article is available at arXiv.

Abstract

Two-parton correlations in the pion, a non perturbative information encoded in double parton distribution functions, are investigated in the Nambu–Jona-Lasinio model. It is found that double parton distribution functions expose novel dynamical information on the structure of the pion, not accessible through one-body parton distributions, as it happens in several estimates for the proton target and in a previous evaluation for the pion, in a light-cone framework. Expressions and predictions are given for double parton distributions corresponding to leading-twist Dirac operators in the quark vertices, and to different regularization methods for the Nambu–Jona-Lasinio model. These results are particularly relevant in view of forthcoming lattice data.

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Correspondence to Sergio Scopetta.

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ArXiv ePrint: 1909.09530

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Courtoy, A., Noguera, S. & Scopetta, S. Double parton distributions in the pion in the Nambu–Jona-Lasinio model. J. High Energ. Phys. 2019, 45 (2019). https://doi.org/10.1007/JHEP12(2019)045

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Keywords

  • Deep Inelastic Scattering (Phenomenology)
  • Phenomenological Models