Yong-Liang Ma

Gravitational D-form factors of the nucleon and pion with mixing between two-quark and four-quark states

We investigate the gravitational $D$-form factors of the nucleon and pion within an extended linear sigma model (eLSM) that incorporates both two-quark and four-quark states, as well as nucleon fields. Within the scalar-meson-dominance picture, we find that meson mixing between two-quark and four-quark states suppresse...