Hadronic molecules

Abstract

A large number of experimental discoveries especially in the heavy quarkonium\nsector that did not at all fit to the expectations of the until then very\nsuccessful quark model led to a renaissance of hadron spectroscopy. Among\nvarious explanations of the internal structure of these excitations, hadronic\nmolecules, being analogues of light nuclei, play a unique role since for those\npredictions can be made with controlled uncertainty. We review experimental\nevidences of various candidates of hadronic molecules, and methods of\nidentifying such structures. Nonrelativistic effective field theories are the\nsuitable framework for studying hadronic molecules, and are discussed in both\nthe continuum and finite volumes. Also pertinent lattice QCD results are\npresented. Further, we discuss the production mechanisms and decays of hadronic\nmolecules, and comment on the reliability of certain assertions often made in\nthe literature.\n

Keywords

Affiliated Institutions

• University of Bonn DE
• University of Chinese Academy of Sciences CN
• Forschungszentrum Jülich DE
• Institute of Theoretical Physics CN
• Institute of High Energy Physics CN

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