Hadro-quarkonia dynamics and Z{sub b} states

Dynamics of hadro-quarkonium system is formulated, based on the channel coupling of a light hadron (h) and heavy quarkonium }(}Q}Q}¯ ) $ /left( {Q/bar Q} /right) $(Q Q-bar ) to heavy-light mesons (}Q}}q}¯ $ Q{sub {/bar q}} $Q{sub q-bar }, }}Q}¯ q $ /bar Q{sub q} $ Q-bar {sub q}). Equations for hadro-quarkonium amplitudes and resonance positions are written explicitly, and numerically calculated for the special case of πϒ(nS) (n = 1, 2, 3). It is also shown that the recently observed by Belle two peaks Z{sub b}(10610) and Z{sub b}(10650) are in agreement with the proposed theory. It is demonstrated that theory predicts peaks at the BB*, B*B* thresholds in all available πϒ(nS) channels.