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arXiv · 2404.07755

Flavor asymmetry from the non-perturbative nucleon sea

Yihan Duan·Siqi Xu·Shan Cheng·Xingbo Zhao·Yang Li·James P. Vary
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Abstract

We demonstrate, in the context of a scalar version of the chiral effective field theory, that the multi-sea quark contribution to the nucleon is significant and highly non-trivial in sharp contrast to the prediction of perturbation theory. The non-perturbative calculation is performed in the Fock sector dependent renormalization scheme on the light front, in which the non-perturbative renormalization is incorporated. The calculation suggests that a fully non-perturbative calculation of the chiral EFT is needed to obtain a robust result to be compared with the recent experimental measurement of flavor asymmetry in the proton.

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Yihan Duan, Siqi Xu, Shan Cheng, Xingbo Zhao, Yang Li, James P. Vary. 2024-04-11. Flavor asymmetry from the non-perturbative nucleon sea. https://doi.org/10.1103/physrevc.110.065201

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