The hidden charm decay of Y4140 by the rescattering mechanism - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: Assuming that Y4140 is the second radial excitation of the P-wavecharmonium $\chi {cJ}^{\prime\prime}$ $J=0, 1$, the hidden charm decay modeof Y4140 is calculated in terms of the rescattering mechanism. Our numericalresults show that the upper limit of the branching ratio of the hidden charmdecay $Y4140\to J-\psi\phi$ is on the order of $10^{-4}\sim 10^{-3}$ for bothof the charmonium assumptions for Y4140, which disfavors the large hiddencharm decay pattern indicated by the CDF experiment. It seems to reveal thatthe pure second radial excitation of the P-wave charmonium$\chi {cJ}^{\prime\prime}$ $J=0, 1$ is problematic.



Author: Xiang Liu

Source: https://arxiv.org/







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