BRANCHING RATIO OF GAMMA(1D)-]GAMMA(1S)PI-PI

We consider the branching ratio of UPSILON(ID)-UPSILON(IS)pipi, which is related to the pipi spectrum in UPSILON(2S)-->UPSILON(1S)pipi. Fixing the gluonic contribution to UPSILON(2S)-->UPSILON(1S)pipi from the pipi spectrum in UPSILON(2S)-->UPSILON(1S)pipi, we find that the decay rate of UPSILON(1D)-->UPSILON(1S)pipi can be an order of magnitude larger than the previous calculations. Then, we can have 7) to 90 events of UPSILON(1D)-->UPSILON(1S)pipi in 10(6) UPSILON(3S) decays, which is at the limit of detectability.