The Exotic XYZ Charmonium-Like Mesons
By S. Godfrey, S. Olsen. 2008
198 citations recorded by the source corpus.
Charmonium, the spectroscopy of mesons, has recently enjoyed a renaissance with the discovery of several missing states and numerous unexpected charmonium-like resonances. These discoveries were made possible by the extremely large data samples made available by the B factories at SLAC and KEK, as well as CESR. Conventional states are well described by quark potential models; however, many of the newly discovered charmonium-like mesons do not seem to fit into the conventional spectrum. There is growing evidence that at least some of these new states are exotic, e.g., new forms of hadronic matter such as mesonic molecules, tetraquarks, and/or hybrid mesons. In this review we describe expectations for the properties of conventional charmonium states and the predictions for molecules, tetraquarks, and hybrids and the various processes that produce them. We examine the evidence for the new candidate exotic mesons, possible explanations, and experimental measurements that might reveal the nature of these states.
Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/3a4f939207e63e8523ca3dadbe2f283cba3986a3
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In Atomic and Molecular Physics, and Optics
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Citations in the corpus
- Bottomonium Mesons and Strategies for Their Observation (2015, background): “However in recent years, starting with the discovery of the DsJ(2317) [23–25] and X(3872) states [26], an increasing number of states have been observed that do not fit into this picture [27–30] pointing to the need to include physics which has hitherto been neglected such as coupled channel effects”
- Heavy-quark QCD exotica (2016, unknown): “Here !!1⁄4!01⁄2q=q (31⁄2 !=m""(1⁄2f1 ðqÞ=f1!ðq0Þ((2), where qðm""Þ is the pion m mentum in the ! rest frame, q0 1⁄4 qðm!Þ, f1!ðqÞÞ 1⁄4 ð1þ R(2)!q(2)Þ, !0 1⁄4 146:2 MeV and m! 1⁄4 775:5 MeV [7].”
- Properties of Excited Charm and Charm-Strange Mesons (2015, background): “However in recent years, starting with the discovery of the DsJ(2317) [8, 60, 61] and X(3872) states [62], an increasing number of states have been observed that do not fit into this picture [63–66] pointing to the need to include physics which has hitherto been neglected such as coupled channel eff”