“…It should be noted that with the help of the magnetic dipole transitions M1, in which there exists many experimental data, it is possible to determine the transition magnetic moments of heavy mesons. There are lots of theoretical works, such as quark model [15,16], non-relativistic QCD [17] the quark potential model [18][19][20][21], various relativistic models, the bag model [22][23][24], the light front model [25][26][27], the Bethe-Salpeter equation [28,29], QCD sum rules [30][31][32][33][34][35][36][37][38], lattice QCD [39,40], chiral model [41][42][43][44][45], Nambu-Jona-Lasino model, the dispersion approach, etc. devoted to this subject.…”