Hidden-charm Pentaquark Production at e⁺e⁻ Colliders

We study one possible production mechanism for the hidden-charm pentaquark via a color-octet $c\overline{c}$ pair fragmentation in e ⁺ e ⁻ collision. The pentaquark production at B factory energy is dominated by $e^{+}{e}^{-}\to c\overline{c}g\to P_c+X$, while at Z ⁰ pole energy, there are several partonic processes playing significant role. Our results show that it is possible to search for the direct pentaquark production signal at e ⁺ e ⁻ colliders, which is important to understand the properties of pentaquark. (paper)