A suggested search for doubly charmed baryons of $J^P=3/2^+$ via their electromagnetic transitions

Abstract

We use the method of light-cone sum rules to study the electromagnetic transition of the $Ξ^{*++}_{cc}$ into $Ξ^{++}_{cc}γ$, whose decay width is estimated to be $13.7~{^{+17.7}_{-~7.9}}$ keV. This value is large enough for the $Ξ^{*++}_{cc}$ to be observed in the $Ξ^{++}_{cc}γ$ channel, and we propose to continually search for it in future LHCb and BelleII experiments.

9 pages, 1 figure, 2 tables, accepted by PRD