简介：Veryrecently,BelleannouncedtheirobservationofΥ(5S)! bJ!(J=0;1;2),indicatingthattheΥ(5S)! bJ!decaysalsohavelargedecaywidths,i.e.,themeasuredbranchratiosofΥ(5S)! bJ!are<3:410??3,(1:640:23+0:30??0:22)10??3,and(0:570:220:07)10??3withJ=0;1;2,respectively[1].ItshouldbenoticedthateventhoughthetreelevelcontributionstoΥ(5S)! bJ!(J=0;1;2)shouldbestronglysuppressedduetotheOkubo-Zweig-Iizuka(OZI)rule,suchlargedecaywidthsareobserved,whichagaininspiresourinterestinunderstandingsuchquantities.Inthiswork,weproposethatthecontributionfromthehadronicloopshouldbeconsideredinstudyingΥ(5S)! bJ!.
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