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We discuss decays and productions for the possible molecular states formed bybottom mesons B (B*) and anti-B (anti-B*). The twin resonances found by Belle,Zb(10610) and Zb(10650), are such candidates. The spin wave functions of themolecular states are rearranged into those of heavy and light spin degrees offreedom by using the re-coupling formulae of angular momentum. By applying theheavy quark symmetry we derive model independent relations among various decayand production rates, which can be tested in experiments.

Decays and productions via bottomonium for Z_b resonances and other B anti-B molecules