The light scalar mesons as tetraquarks

We present a numerical solution of the four-quark Bethe–Salpeter equation for ground-state scalar tetraquarks with JPC=0++. We find that the four-body equation dynamically generates pseudoscalar-meson poles in the Bethe–Salpeter amplitude. The resulting tetraquarks are genuine four-quark states that...

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Bibliographic Details
Main Authors: Gernot Eichmann, Christian S. Fischer, Walter Heupel
Format: Article
Language:English
Published: Elsevier 2016-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269315009843