Role of strange quarks in the $D$-term and cosmological constant term of the proton

TL;DR

This paper explores how strange quarks influence the internal structure of the proton, particularly its $D$-term and cosmological constant, revealing the importance of flavor symmetry in these contributions.

Contribution

It provides a detailed analysis of flavor-decomposed proton form factors, highlighting the role of strange quarks and the limitations of flavor symmetry assumptions.

Findings

Strange quarks significantly affect the proton's $D$-term and cosmological constants.

Flavor blindness of the isovector $D$-term form factor holds only under flavor SU(3) symmetry.

The study enhances understanding of proton structure through flavor decomposition.

Abstract

We investigate the mechanics of the proton by examining the flavor-decomposed proton cosmological constants and generalized vector form factors. The interplay of up, down, and strange quarks within the proton is explored, shedding light on its internal structure. The contributions of strange quarks play a crucial role in the $D$-term and cosmological constants. We find that the flavor blindness of the isovector $D$-term form factor is only valid in flavor SU(3) symmetry.