ãWith rapid growth of the database of the BES III and the proposed super flavor factory,measurement of the rare J/ψdecays may be feasible,especially the weak decays into baryon final states.In this work,we study the decay rate of J/ψtoΛc+øverlineΣ+in the standard model(SM)and physics beyond the SM(here we use the unparticle model as an example).The quark−pair-creation model is employed to describe the creation of a pair of qq from a vacuum.We find that the rate of J/ψ→Λc+Σ^(+) is of the order of 10−10 in the SM,whereas the contribution of the unparticle is too small to be substantial.Therefore if a large branching ratio is observed,it must be due to new physics beyond the SM,but by no means the unparticle.
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机译：The Impacts of Margin Trading on Rate of Return and Volatility in the Stock Market: A Study Using the SVAR Model and Panel Regressions =融资对股价收益与波动的影响特征研究——基于SVAR模型与面板模型的实证分析
