Formation of hidden-charm pentaquarks in photon-nucleon collisions
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Univ. of Minnesota, Minneapolis, MN (United States); Institute of Theoretical and Experimental Physics, Moscow (Russia)
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).
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0011842; AC05-06OR23177
- OSTI ID:
- 1214155
- Alternate ID(s):
- OSTI ID: 1213277
- Report Number(s):
- JLAB-PHY-15-2131; DOE/OR/23177-3524; arXiv:1508.00888; PRVDAQ; TRN: US1600858
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 92, Issue 3; ISSN 1550-7998
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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