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TITLE Instanton effects on charmonium states
KIAS AUTHORS Kim, Hyun-Chul
JOURNAL PHYSICAL REVIEW D, 2018
ARCHIVE  
ABSTRACT The instanton effects on the charmonium spectrum are discussed in the framework of the nonrelativistic potential model. The results from the constituent quark model without inclusion of instanton effects are compared with the results for the potential from the constituent quark model plus the contribution from the instanton liquid model. We consider two models with the corresponding instanton potentials and discuss their relevance to explanations of the origin of phenomenological parameters used in the nonrelativistic potential models. We also present the universal instanton potential in a parametrized form, which can be useful in practical calculations.
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