New look at the $[70,1^{-}]$ nonstrange and strange baryons in the $1/N_c$ expansion

N. Matagne, Fl. Stancu

The masses of excited nonstrange and strange baryons belonging to the multiplet $[70,1^{-}]$ are calculated in the $1/N_c$ expansion to order $1/N_c$ with a new method which al…