Photoproduction of Pentaquark ${\Theta }^{+}$ and Chiral Symmetry Restoration in Hot and Dense Medium

Xuewen Hao, Pengfei Zhuang

The photoproduction rate of pentaquark ${\Theta }^{+}$ is calculated in a hot and dense medium. At high temperature and density, due to the restoration of chiral symmetry, photoproduction en…