https://doi.org/10.1140/epjc/s10052-019-7527-4
Regular Article - Theoretical Physics
The 
-puzzle solved by means of quark model predictions
1
INFN, Sezione di Genova, Via Dodecaneso 33, 16146, Genoa, Italy
2
Dipartimento di Fisica dell’Universitá di Genova, Via Dodecaneso 33, 16146, Genoa, Italy
3
Sloane Physics Laboratory, Center for Theoretical Physics, Yale University, New Haven, CT, 06520-8120, USA
4
Department of Physics, University of La Plata (UNLP), 49 y 115 cc. 67, 1900, La Plata, Argentina
5
Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio C-3, Ciudad Universitaria, 58040, Morelia, Michoacán, Mexico
6
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico
* e-mail: santopinto@ge.infn.it
Received:
22
August
2019
Accepted:
29
November
2019
Published online:
13
December
2019
The observation of five 
= ssc states by LHCb [Aaij et al. Phys. Rev. Lett. 118, 182001
(2017)] and the confirmation of four of them by Belle [Yelton et al. Phys. Rev. D 97, 051102
(2018)], may represent an important milestone in our understanding of the quark organization inside hadrons. By providing results for the spectrum of baryons and predictions for their 
and 
decay amplitudes within an harmonic oscillator based model, we suggest a possible solution to the 
quantum number puzzle and we extend our mass and decay width predictions to the 
states. Finally, we discuss why the set of 
baryons is the most suitable environment to test the validity of three-quark and quark–diquark effective degrees of freedom.
© The Author(s), 2019
