Measurement of the branching fraction for the decay Υ(4S)→Υ(1S)π+π-

Hou, W. S. and othersW. S. and othersHou2011-07-202018-06-282011-07-202018-06-282009http://ntur.lib.ntu.edu.tw//handle/246246/236234en-USMeasurement of the branching fraction for the decay Υ(4S)→Υ(1S)π+π-http://ntur.lib.ntu.edu.tw/bitstream/246246/236234/-1/69.pdf