Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-08-10
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 6 figures,to be published in the Proceedings of the 13th. International Conference at Hadron Machines - Beauty2011,
Scientific paper
A theoretical overview of the exotic spectroscopy in the charm and beauty quark sector is presented. These states are unexpected harvest from the $e^+e^-$ and hadron colliders and a permanent abode for the majority of them has yet to be found. We argue that some of these states, in particular the $Y_b(10890)$ and the recently discovered states $Z_b(10610)$ and $Z_b(10650)$, discovered by the Belle collaboration are excellent candidates for tetraquark states $[bq][\bar{b}\bar{q}]$, with $q=u,d$ light quarks. Theoretical analyes of the Belle data carried out in the tetraquark context is reviewed.
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