2015/07/31 by L. Maiani, A. D. Polosa, V. Riquer · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1016/j.physletb.2015.08.008
4 pages, 1 figure, to appear in PLB
arxiv created 2015/08/03 · arxiv updated 2015/09/30
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.