Speaker
Er-Liang Cui
(Beihang University)
Description
In this talk, I would like to report our recent study on decay properties of a few heavy favor baryons, including the excited bottom baryons, $\Sigma_{b}(6097)^{\pm}$, $\Xi_{b}(6227)^-$ and the doubly charmed baryons $\Xi_{cc}^{*++}$. We utilize the method of light-cone sum rules, which is widely used to study the hadron decays in recent years. Our estimations suggest that the bottom baryons $\Sigma_{b}(6097)^{\pm}$ and $\Xi_{b}(6227)^-$ both belong to the P-wave bottom baryon doublet $[\mathbf{6}_{F},2,1,\lambda]$, whose color is symmetric $\mathbf{6}_{F}$, the total angular momentum of light system is 2, the spin of light system is 1 and it is $\lambda$-type excitation. We also calculate the electromagnetic transition widths of the doubly heavy baryon $\Xi_{cc}^{*++}$, $\Xi_{cc}^{*+}$, $\Omega_{cc}^{*+}$, $\Xi_{bb}^{*0}$, $\Xi_{bb}^{*-}$ and $\Omega_{bb}^{*-}$. The decay width of the process $\Xi_{cc}^{*++}\to\Xi_{cc}^{++}\gamma$ is estimated to be $13.7_{-7.9}^{+17.7}$ keV, which is large enough to be measured in future LHCb and BelleII experiments.
Primary authors
Prof.
Atsushi Hosaka
(RCNP, Osaka University)
Er-Liang Cui
(Beihang University)
Dr
Hua-Xing Chen
(Beihang University)
Mrs
Hui-Min Yang
(Beihang University)
Prof.
Shi-Lin ZHU
(Peking University)
Wei Chen
(Sun Yat-Sen University)
Dr
Xiang Liu
(Peking University)
