Formation of hidden-charm pentaquarks in photon-nucleon collisions.

By V. Kubarovsky, M. Voloshin. 2015

134 citations recorded by the source corpus.

The cross section for formation in γ + ρ collisions of the recently found hidden-charm pentaquark states Ρc(4380) and Ρc(4450) is discussed and estimated. The studies of these resonances in photon beam experiments can be complementary to those in the LHCb experiment setting, and may be more advantageous for measurement of their additional decay channels. It is pointed out that both the relative importance of such decays and the yield of the resonances in the γ + ρ collisions are sensitive to the internal dynamics of the pentaquarks and can resolve between theoretical models. Specific numerical estimates are discussed within a simple ‘baryocharmonium’ model, where the the observed Ρc resonances are composites of J/ψ and excited nucleon states with the quantum numbers of Ν(1440) and Ν(1520).

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/eea850961794c54b7f397b3f0d3b3d3fa8eb61d4

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In Nuclear and High Energy Physics

1. Xiang Liu
2. S. Olsen
3. Hua-Xing Chen
4. Wei Chen
5. Shi-Lin Zhu
6. Alessandro Pilloni
7. J. Lange
8. S. Stone

Citations in the corpus

• Exotics: Heavy pentaquarks and tetraquarks (2017, background): “This has led to a number of hypotheses to explain the two Pc states: • Pc(4380) and Pc(4450) are baryocharmonia [135].”
• Multiquark Resonances (2016, background): “The Pc pentaquarks might be good candidates for these [164].”
• The hidden-charm pentaquark and tetraquark states (2016, background): “Voloshin also studied the γp → Pc(4380)/Pc(4450) → J/ψ + p process and estimated the cross section [418].”
• Hadronic molecules (2017, background): “…→ χc1pK− (Guo et al., 2015c), photoproduction (Gryniuk and Vanderhaeghen, 2016; Hiller Blin et al., 2016; Huang et al., 2016; Karliner and Rosner, 2016; Kubarovsky and Voloshin, 2015, 2016; Wang et al., 2015a), heavy ion collisions (Wang et al., 2016b), pionnucleon reactions (Kim et al., 2016;…”
• Nonstandard heavy mesons and baryons: Experimental evidence (2017, background): “suggested (402; 403; 404; 405) that photo-production on a nucleon would be a promising way to search for these states and to study their properties.”