About A Plausible Explanation Of Upsilon(10860)

The experimental resonance Upsilon(10860) presents some typical properties of conventional bottomonium states as well as apparently unconventional features. In this talk it is shown that some of the properties of Upsilon(10860), namely its mass, dilepton decay width and pi pi Upsilon production rates, can be explained from its interpretation as Upsilon(5s) bottomonium state, given that one has a consistent description of b (b) over bar hybrid states. It is also pointed out that other puzzling properties (e.g. the dipion transition rate to hb) can be understood under the assumption that Upsilon(10860) is a mixing of the Upsilon(5s) with the ground b (b) over bar hybrid state.