Observation of Anomalous e+e? Υ(1S) π+π? and Υ(2S) π+π? Production near the Υ(5S)

Chen, K.-F.K.-F.ChenHou, W.-S.W.-S.Hou2010-09-202018-06-282010-09-202018-06-282008-01http://ntur.lib.ntu.edu.tw//handle/246246/203322en-USObservation of Anomalous e+e? Υ(1S) π+π? and Υ(2S) π+π? Production near the Υ(5S)