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arXiv · 0708.3496

Threshold effect and π^\pm ψ(2S) peak

Jonathan L. Rosner
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Abstract

A resonance-like structure in the $π^\pm ψ(2S)$ mass spectrum arising in $B \to K π^\pm ψ(2S)$ has recently been reported. It is noted that the mass of this structure, $4433 \pm 4 \pm 1$ MeV, is not far from the threshold for production of $D^* \bar{D}_1(2420)$. A proposed mechanism for production of this state is suggested, and tests are suggested.

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Jonathan L. Rosner. 2007-08-31. Threshold effect and π^\pm ψ(2S) peak. https://doi.org/10.1103/physrevd.76.114002

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