Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea

TL;DR

This paper predicts the nonperturbative intrinsic contribution to the strange-antistrange asymmetry in the nucleon sea using light-front wave functions inspired by AdS/QCD and a meson-baryon fluctuation model.

Contribution

It introduces a novel approach combining AdS/QCD inspired light-front wave functions with meson-baryon fluctuation models to predict the strange-antistrange asymmetry.

Findings

Results align closely with existing parametrizations.

Holographic wave functions effectively model nucleon structure.

Nonperturbative effects significantly influence the asymmetry.

Abstract

We give predictions for the nonperturbative (intrinsic) contribution to the $s(x) - \bar{s}(x)$ asymmetry of the nucleon sea. For this purpose we use different light-front wave functions inspired by the AdS/QCD formalism, together with a model of the nucleon in terms of meson-baryon fluctuations. The holographic wave functions for an arbitrary number of constituents, recently derived by us, give results quite close to known parametrizations that appear in the literature.