Photon decays of baryons with strangeness

Octet to decuplet electromagnetic transition in a relativistic quark model

“…Our results for the decay widths in Table VII are comparable with most of the predictions presented in the literature [11][12][13][14][15]17,[20][21][22][23][24]27,65]. The exception is the result for the Á !…”

“…, which are independent of the baryon wave function parametrizations, compared with the results of quark models [11,29] and lattice QCD with m ¼ 662 MeV [29]. structure of the baryons and the kinematic effects due to the baryon masses.…”

“…The exception is the result for the Á ! N reaction, where most of the models underestimate the experimental data by more than 200 keV [11,14,15,17,21,22,28], except for the heavy baryon chiral perturbation theory (HB PT) [24], large N c limit [27], and QCD sum rules [23].…”

Radiative decay of theΛ*(1520)

“…However, as said above, it is precisely the γΣ 0 (1193) final state which in our hadronic interaction picture appears enhanced. We should also mention other quark models [14,15,16,17] that enlarge and complement Ref. [13], as well as algebraic models [18] where the Λ(1520) radiative decay has been evaluated.…”

Electromagnetic decay of theΣ0(1385)toΛγ

“…There are many theoretical calculations of the EM decays of decuplet hyperons such as: the non-relativistic quark model (NRQM) [12,13], a relativized constituent quark model (RCQM) [14], a chiral constituent quark model (χCQM) [15], the MIT bag model [16], the boundstate soliton model [17], a three-flavor generalization of the Skyrme model that uses the collective approach [18,19], an algebraic model of hadron structure [20], and heavy baryon chiral perturbation theory (HBχPT) [21], among others. Table I summarizes the theoretical predictions and experimental branching ratios for the EM transitions of interest.…”