Generalized parton distributions of sea quark at zero skewness in the light-cone model

We study the chiral-even generalized parton distributions (GPDs) of $${\bar{u}}$$ and $${\bar{d}}$$ quarks at zero skewness using the overlap representation within the light cone formalism. The GPDs of $${\bar{u}}$$ and $${\bar{d}}$$ quarks can be expressed as the convolution of the light cone wave functions which are obtained from the baryon-meson fluctuation model in terms of the $$|q{\bar{q}}B\rangle $$ Fock states. We present the numerical results for $$H^{{\bar{u}}/P}(x,\xi ,\Delta ^2)$$, $$H^{{\bar{d}}/P}(x,\xi ,\Delta ^2)$$, $$E^{{\bar{u}}/P}(x,\xi ,\Delta ^2)$$ and $$E^{{\bar{d}}/P}(x,\xi ,\Delta ^2)$$. We apply the model resulting GPDs to calculate the orbital angular momentum of the $${\bar{u}}$$ and $${\bar{d}}$$ quarks, showing that $$L^{{\bar{u}}/P}$$, $$L^{{\bar{d}}/P}$$ are positive and $$L^{{\bar{u}}/P}$$ is smaller than $$L^{{\bar{d}}/P}$$. The sea quark OAM distributions in the impact parameter space $$L_{{\bar{q}}}(x,{\varvec{b}}_{\varvec{T}})$$ are also calculated