[Fujita, M; Fujita, Mitsutoshi] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
[He, Song] Jilin Univ, Coll Phys, Ctr Theoret Phys, Changchun 130012, Peoples R China.
[He, Song] Albert Einstein Inst, Max Planck Inst Grav Phys, Muhlenberg 1, D-14476 Golm, Germany.
[Sun, Yuan] Cent South Univ, Sch Phys & Elect, Changsha 418003, Peoples R China.
[Zhang, Jun] Univ Alabama, Dept Phys & Astron, 514 Univ Blvd, Tuscaloosa, AL 35487 USA.