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arXiv · hep-ex/0409052

The X(3872) at CDF II

G. Bauer
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Abstract

Last year's X(3872) discovery was confirmed with the CDF II detector in pbarp collisions. We measure its mass to be $3871.3 \pm 0.7 \pm 0.4 MeV/c2$. The source of X-mesons in the large CDF sample is resolved by studying their vertex displacement. We find $16.1 \pm 4.9 \pm 2.0$% of our X-sample comes from decays of b-hadrons, and the remainder from prompt sources: either direct production or by decay of (unknown) short-lived particles. The mix of production sources is similar to that observed for the psi(2S) charmonium state.

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G. Bauer. 2004-09-24. The X(3872) at CDF II. https://doi.org/10.1142/s0217751x05027552

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