Importance of Sea Contribution to Nucleons

TL;DR

This paper investigates the role of sea quark-gluon states in nucleons using a statistical model, assessing their impact on properties like magnetic moments and spin distributions, and comparing different assumptions about sea contributions.

Contribution

It introduces a statistical model considering various quark-gluon Fock states and evaluates the significance of scalar, vector, and tensor sea contributions to nucleon properties.

Findings

Scalar and tensor sea contributions are significant for accurate nucleon properties.

Suppression of scalar and tensor sea leads to deviations from experimental data.

The model's results align with experimental values when all sea contributions are included.

Abstract

We studied the statistical model of nucleons consisting of sea having various quark-gluon Fock states in addition to valence quarks. Using statistical consideration and taking 86% of the total Fock states contributing to the low energy properties of nucleon, we aim to find the contributions to these properties coming from the scalar, vector and tensor sea. We checked its validity against the assumption where the contributions from scalar and tensor sea have been suppressed and justified to be unimportant. We took the approximation that sea is getting a zero contribution from H_0 G_\bar10 and H_1 G_\bar10 in three gluon states. Under above considerations, the calculated magnetic moment, spin distribution and weak decay coupling constant ratio for proton and neutron states have been tabulated. We hereby confirm that the suppression of the scalar and tensor sea leads to modification in the parameters of the nucleons showing deviation from the experimental data.