Properties of Exotic Charmonium-like States at CDF

Details Properties of Exotic Charmonium-like States at CDF Properties of Exotic Charmonium-like States at CDF

2009-06-26

arxiv.org/abs/0906.4996v2

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 8 postscript figures, submitted to DIS 2009 proceeding, BF included

Scientific paper

We report the recent evidence for a new narrow structure, Y(4140), decaying to the $J/\psi \phi$ final state, in exclusive $B^+\to J/\psi\phi K^+$ decays in a data sample corresponding to an integrated luminosity of 2.7 \ifb collected at the CDF II detector. This narrow structure with its mass well above open charm pairs is unlikely to be a candidate for a conventional charmonium state. From a study of the X(3872) mass and width based on the world's largest sample of $X(3872)\to J/\psi\pi^+\pi^-$ decays, we find that our X(3872) signal is consistent with a single state, and leads to the most precise measurement of the X(3872) mass.

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