Chinese Physics C > 2016, Vol. 40 > Issue(12): 124104 DOI: 10.1088/1674-1137/40/12/124104

Photoproduction of hidden-charm states in the γp→D^*0Λ_c⁺reaction near threshold

Yin Huang^1,2,3,,,
Ju-Jun Xie^1,3,,,
Jun He^1,3,
Xurong Chen^1,3,
Hong-Fei Zhang^2,3

1.
Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China
2.
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
3.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
4.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
5.
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

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Abstract：
We report on a theoretical study of the hidden charm N ^* _ccstates in the γp→ D ^*0Λ _c ⁺reaction near threshold within an effective Lagrangian approach. In addition to the contributions from the s-channel nucleon pole, the t-channel D ⁰exchange, the u-channel Λ _c ⁺exchange and the contact term, we study the contributions from the N ^* _ccstates with spin-parity J ^P=1/2 ^-and 3/2 ^-. The total and differential cross sections of the γp→ D ^*0Λ _c ⁺reaction are predicted. It is found that the contributions of these N ^* _ccstates give clear peak structures in the total cross sections. Thus, this reaction is another new platform to study the hidden-charm states. It is expected that our model calculation may be tested by future experiments.
- hidden charm states,
- photon production,
- effective Lagrangian approach

References

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Yin Huang, Ju-Jun Xie, Jun He, Xurong Chen and Hong-Fei Zhang. Photoproduction of hidden-charm states in the γp→D ^*0Λ _c ⁺reaction near threshold[J]. Chinese Physics C, 2016, 40(12): 124104. doi: 10.1088/1674-1137/40/12/124104

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Received: 2016-06-20

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Supported by Major State Basic Research Development Program in China (2014CB845400), National Natural Science Foundation of China (11475227, 11275235, 11035006) and Chinese Academy of Sciences (Knowledge Innovation Project (KJCX2-EW-N01), Youth Innovation Promotion Association CAS (2016367), Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China (Y5KF151CJ1)

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沈阳化工大学材料科学与工程学院沈阳 110142

Photoproduction of hidden-charm states in the γp→D^*0Λ_c⁺reaction near threshold

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