Studying radiative baryon decays with the SU(3) flavor symmetry

The weak and electromagnetic radiative baryon decays of octet T-8, decuplet T-10, single charmed antitriplet T-c3 and sextet T-c6, and single heavy bottomed antitriplet T-b3 and sextet T-b6 are investigated by using the SU(3) flavor symmetry irreducible representation approach. We analyze the contributions from a single quark transition q(1) -> q(2)gamma and the W exchange transitions and find that the amplitudes could be easily related by the SU(3) flavor symmetry in the T-b3,T-b6, T-c3,T-c6, and T-10 weak radiative decays as well as T-10 -> T-8 gamma electromagnetic decays. Nevertheless, the amplitude relations are a little complex in the T8 -> T-8'gamma. and T-8 -> T-10 gamma weak decays due to the quark antisymmetry in the octet T-8 and the W exchange contributions. The predictions for the branching ratios of Lambda(0)(b) -> n gamma, Xi(-)(b) -> Xi(-)gamma , Xi(-)(b) -> Sigma(-)gamma, Xi(0)(b) -> Sigma(0)gamma, Xi(0)(b) -> Lambda(0)gamma, Xi(0)(b) -> Xi(0)gamma, Xi* -> Xi gamma, Sigma*(0) -> Sigma(0)gamma, Delta(0) -> n gamma and Delta(+) -> p gamma are given by the relevant experimental data. The seven predictions of B(Tc3. T8.) are obtained by using previous other theoretical predictions of B(Lambda(+)(c) -> Sigma(+)gamma). The results in thiswork can be used to test the SU(3) flavor symmetry approach in the radiative baryon decays by the future experiments at BESIII, LHCb and Belle-II.

Automated summary

The study investigates weak and electromagnetic radiative baryon decays using the SU(3) flavor symmetry irreducible representation approach, analyzing contributions and amplitude relations in different multiplets. Predictions for branching ratios are provided based on experimental data, and the results can be used to test the SU(3) flavor symmetry approach in future experiments.