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Charmonium absorption by nucleons
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DOI：10.1103/PhysRevC.63.044906.png)
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摘要
En 中文
J/psi dissociation in collisions with nucleons is studied within a boson-exchange model and the energy dependence of the dissociation cross section is calculated from the threshold for Lambda (c)(D) over bar production to high energies. We illustrate the agreement of our results with calculations based on short-distance QCD and Regge theory. The compatibility between our calculations and the data on J/psi photoproduction on a nucleon is discussed. We evaluate the elastic J/psi +N cross section using a dispersion relation and demonstrate the overall agreement with the predictions from QCD sum rules. Our results are compatible with the phenomenological dissociation cross section evaluated from the experimental data on J/psi production from gamma +A, p +A, and A+A collisions.
Keyword:
SHORT-DISTANCE ANALYSIS
TOTAL CROSS-SECTIONS
HEAVY-QUARK SYSTEMS
J/PSI SUPPRESSION
PHOTOPRODUCTION
SCATTERING
COLLISIONS
MODEL
MESON
DEPENDENCE
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期刊
IF:
3.4
论文数:
2.9W
被引数:
5.7W
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