The new pentaquarks in the diquark model

By L. Maiani, A. Polosa, V. Riquer. 2015

252 citations recorded by the source corpus.

Abstract 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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/95e9086d1f5d7def99a0b10e9ce005db07f59c87

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In Nuclear and High Energy Physics

Citations in the corpus

Exotic Hadrons from Heavy Ion Collisions (2017, background): “After the observation of the two P + c structures, many theoretical works appeared proposing various explanations for these structures [191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209].”
Heavy-quark QCD exotica (2016, background): “In the conventional diquark picture [53], the pentaquark may be assembled as the bound state of three 3̄ components, c̄(cq)(qq), a composition exploited, e.”
Multiquark Resonances (2016, methodology): “A diquark-diquark-antiquark description has been proposed in [121, 395, 396] (see also Section 4.”
Multiquark States (2017, background): “The tightly bound pentaquark model can generate such high spin for Pc(4450) + via orbital angular momentum between quarks [33] and can account for the wider Pc(4380) .”
Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, methodology): “Such pentaquarks could be found in reactions as, for example, Ξb(5749) → K Pc → K(J/ψΣ(1385)), Ωb(6049) → φPc → φ(J/ψΩ(1672)) or Ωb(6049) → φPc → K(J/ψΞ(1387)) [645].”
Nonstandard heavy mesons and baryons: Experimental evidence (2017, background): “and the four states seen decaying to J/ψφ (329; 389), and provide a common origin for the Pc(4380) and Pc(4450) pentaquarks that can accommodate their opposite parities (390; 391).”
Exotics: Heavy pentaquarks and tetraquarks (2017, background): “One assigns P(3/2−) to the PA and P(5/2) to the PS series of pentaquarks [44].”
The hidden-charm pentaquark and tetraquark states (2016, background): “[381], Maiani, Polosa, and Riquer discussed the hidden-charm pentaquarks discovered by the LHCb Collaboration [2], and pointed out that they can be a natural expectation of an extended picture of hadrons where quarks and diquarks are fundamental units [382].”