Production of the P-wave excited B c -states through the Z 0 boson decaysZhi Yang, Xing-Gang Wu, Li-Cheng Deng, Jia-Wei Zhang and Gu ChenEur. Phys. J. C, 71 3 (2011) 1563DOI: https://doi.org/10.1140/epjc/s10052-011-1563-z