Double parton distributions of the proton from basis light-front quantization

Abstract

Within the basis light-front quantization framework, we systematically investigate the unpolarized and longitudinally polarized double parton distributions (DPDs) of quarks inside the proton. We utilize the light-front wave functions of the proton derived in the valence sector from a Hamiltonian quantized on the light-front. The interaction terms of the Hamiltonian consist of a one-gluon exchange interaction at fixed coupling and a three-dimensional confinement potential. Our current analysis yields significant correlations of the quarks' longitudinal momenta with their transverse separation. We also demonstrate that our calculations do not support the commonly used $x-{\vec{k}}_{\perp }$ factorization of the DPDs in $x$ and $k_{\perp }$. Our results are qualitatively consistent with those of other phenomenological models.

15 pages, 16 figures

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Cited by in corpus (1)

• Nucleon Structure from Basis Light-Front Quantization : Status and Prospects