Speaker
Description
The lightest pentaquark state recently observed by the LHCb collaboration, P(4380), is described with a compact multiquark approach. By using very general arguments, dictated by symmetry considerations, it is shown that this state belongs to an SU(3) flavour octet. A complete classi?cation of all possible states and quantum numbers, which can be useful both to the experimentalists in their search for new fi?ndings and to theoretical model
builders is given, without introducing any particular dynamical model. Some predictions fi?nally are provided with a Gürsey-Radicati inspired mass formula. The predicted mass of the lightest pentaquark state reported by LHCb, P(4380), is in agreement with the experimental mass within one standard deviation.
Moreover, the predicted masses of the all the octet pentaquark states and the possible bottom baryon decay channels, which involve the predicted resonances as intermediate states, are provided.
Finally, the partial decay widths for all the predicted pentaquark
resonances are computed.
