The new pentaquarks in the diquark model

L. Maiani (Dipartimento di Fisica and INFN, ‘Sapienza’ Università di Roma, P.le Aldo Moro 5, I-00185 Roma, Italy) ; A.D. Polosa (Dipartimento di Fisica and INFN, ‘Sapienza’ Università di Roma, P.le Aldo Moro 5, I-00185 Roma, Italy) ; V. Riquer (Dipartimento di Fisica and INFN, ‘Sapienza’ Università di Roma, P.le Aldo Moro 5, I-00185 Roma, Italy)

Pentaquark baryons are a natural expectation of an extended picture of hadrons where quarks and diquarks are the fundamental units. The parity/mass pattern observed, when compared to that of exotic mesons, appears as the footprint of a compact five-quark structure. What has been learned from the X , Y , Z phenomenology informs about the newly found pentaquark structure and suggests further experimental tests and directions to be explored.

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Published on:
07 August 2015
Publisher:
Elsevier
Published in:
Physics Letters B (2015)

DOI:
https://doi.org/10.1016/j.physletb.2015.08.008
Copyrights:
The Authors
Licence:
CC-BY-3.0

Fulltext files: