Spectroscopy of light tetraquark states

Sasa Prelovsek, Christian B. Lang, Markus Limmer, Daniel Mohler, Terrence Draper, Keh Fei Liu, Nilmani Mathur

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1 Scopus citations


We address the question whether the lightest scalar mesons s and k are tetraquarks, as is strongly supported by many phenomenological studies. We present a search for possible light tetraquark states with JPC = 0+ and I = 0; 1=2; 3=2; 2 on the lattice. The spectrum is determined using the generalized eigenvalue method with a number of tetraquark interpolators at the source and the sink. In all the channels, we unavoidably find lowest scattering states p(k)p(k) or K(k)p(k) with back-to-back momentum k=0; 2p L ; :: . However, we find an additional light state in the I =0 and I = 1=2 channels, which may be related to the observed resonances s and k with a strong tetraquark component. In the exotic repulsive channels I = 2 and I = 3=2, where no resonance is observed, we find no light state in addition to the scattering states.

Original languageEnglish
JournalProceedings of Science
StatePublished - 2009
Event27th International Symposium on Lattice Field Theory, LAT 2009 - Beijing, China
Duration: Jul 26 2009Jul 31 2009

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ASJC Scopus subject areas

  • General


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