Heavy quarkonium decay $V\to ggg$ with both relativistic and QCD radiative corrections

Hong-Mei Jiang, Chao-Jie Fan, Jun-Kang He +1

In the heavy quarkonium decay process $V\to ggg$ ($V=J/\psi ,{\rm Y}$), making a definite prediction including relativistic corrections has so far remained a significant challenge. In t…