X(3872)
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The X(3872) is an anomalous particle with an energy of 3871.2 MeV which does not fit into the quark model because of its quantum numbers. It was discovered by the Belle experiment in Japan and later confirmed by several other experimental collaborations. Several theories have been proposed for its nature, such as a mesonic molecule or a diquark-antidiquark pair.
[edit] See also
[edit] References and external links
- David Harris (13 April 2008). "The charming case of X(3872)". Symmetry Magazine. http://www.symmetrymagazine.org/breaking/2008/04/13/the-charming-case-of-x3872/. Retrieved 2009-12-17.
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