Production of the P-wave excited B c -states through the Z 0 boson decays Zhi Yang, Xing-Gang Wu, Li-Cheng Deng, Jia-Wei Zhang and Gu Chen Eur. Phys. J. C, 71 3 (2011) 1563 Published online: 01 March 2011 DOI: 10.1140/epjc/s10052-011-1563-z