Supported by the Russian Science Foundation(14-50-00080);Russian Foundation for Basic Research(13-02-00215-a;13-02-01134-a;14-02-00580-a;14-02-31275-mol-a;14-02-00047-a;14-02-31478-mol-a;14-02-91332;15-02-05674)
Supported by Chinese Academy of Sciences Knowledge Innovation Project (KJCX2-SW-No2)National Natural Science Foundation of China(10435080).
In 1997, Diakonov, Petrov, and Polyakov, in the framework of the chiral soliton model, predicted an exotic baryon (?)+ with mass M ≈1.53 GeV, S = +1, spin 1/2 and isospin 0. However, the subject has been thrust to th...