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The Status of Molecules

T. Barnes
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Abstract

This report summarizes the experimental and theoretical status of hadronic molecules, which are weakly-bound states of two or more hadrons. We begin with a brief history of the subject and discuss a few good candidates, and then abstract some signatures for molecules which may be of interest in the classification of possible molecule states. Next we argue that a more general understanding of $2\to 2$ hadron-hadron scattering amplitudes will be crucial for molecule searches, and discuss some of our recent work in this area. We conclude with a discussion of a few more recent molecule candidates (notably the $f_0(1710)$) which are not well established as molecules but satisfy some of the expected signatures.

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T. Barnes. 1994-06-02. The Status of Molecules. https://arxiv.org/abs/hep-ph/9406215

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