Email Record: Phenomenological study on the decay widths of ##IMG## [http://ej.iop.org/images/1674-1137/42/6/064102/toc_cpc_42_6_064102_ieqn1.gif] {${\boldsymbol{\Upsilon }}({\boldsymbol{nS}})\to {\bar{d}}^{* }(2380)+X$}