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Searching for tetraquarks on the lattice · Around

2010

Searching for tetraquarks on the lattice

Prelovsek, S., Draper, T., Lang, C. B. et al.

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We address the question whether the lightest scalar mesons sigma and kappa are tetraquarks.

We present a search for possible light tetraquark states with J^PC=0^++ and I=0, 1/2, 3/2, 2 in the dynamical and the quenched lattice simulations using tetraquark interpolators.
In all the channels, we unavoidably find lowest scattering states pi(k)pi(-k) or K(k)pi(-k) with back-to-back momentum k=0,2*pi/L,..
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S. Prelovsek and D. Mohler, Phys. Rev. D79 (2009) 014503; M. Alford and R. Jaffe, Nucl. Phys. B578 (2000) 367; H. Suganuma
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S. Prelovsek, T. Draper, C.B. Lang, M. Limmer, K.-F. Liu, N. Mathur and D. Mohler, arXiv: 0909:5134, PoS LAT2009 (2009) 103
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S. Prelovsek, T. Draper, C.B. Lang, M. Limmer, K.-F. Liu, N. Mathur and D. Mohler, to be published
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Then

C. Gattringer, C. Hagen, C.B. Lang, M. Limmer, D. Mohler and A. Schäfer, Phys. Rev. D79 (2009) 054501
2009
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