Strange Beauty and Other Beasts from Upsilon(5S) at Belle

Abstract

The B-factories have successfully exploited the unique advantages of the Upsilon(4S) resonance to study many aspects of Bd and Bu mesons. The Upsilon(10860) (aka Upsilon(5S)) resonance, which is above mass threshold for the Bs and shares many of the same advantages, has been relatively unexplored. The Belle experiment has collected more than 120 fb-1 at the Upsilon(10860) and 7.9 fb-1 at higher energies, corresponding to more than 7 million Bs events. Recent results based on ~20% of these data are presented and prospects for future possiblities discussed.