Heavy quark spin symmetric molecular states from D¯(*)Σc(*) and other coupled channels in the light of the recent LHCb pentaquarks

We consider the D¯(*)Σc(*) states, together with J/ψN and other coupled channels, and take an interaction consistent with heavy quark spin symmetry, with the dynamical input obtained from an extension of the local hidden gauge approach. By fitting only one parameter to the recent three pentaquark states reported by the LHCb Collaboration, we can reproduce the three of them in base to the mass and the width, providing for them the quantum numbers and approximate molecular structure as 1/2− D¯Σc, 1/2− D¯*Σc, and 3/2− D¯*Σc, and the isospin I=1/2. We find another state around 4374 MeV, of the 3/2− D¯Σc* structure, for which indications appear in the experimental spectrum. Two other near degene…