X(3872) in effective field theory
classification
✦ hep-ph
keywords
effectivechiralconsiderconsistentdescribefieldheavy-quarkimplications
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We consider the implications from the possibility that the recently observed state X(3872) is a meson-antimeson molecule. We write an effective Lagrangian consistent with the heavy-quark and chiral symmetries needed to describe X(3872) and study its properties.
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