Hagen, Christian and Hierl, Dieter and Schäfer, Andreas
Search for the Theta^+(1540) in lattice QCD.
European Physical Journal A 29 (2), pp. 221-225.
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Other URL: http://www.springerlink.com/content/k9r57g131134/?sortorder=asc&p_o=10
We report on a study of the pentaquark Theta^+(1540), using a variety of different interpolating fields. We use Chirally Improved fermions in combination with Jacobi smeared quark sources to improve the signal and get reliable results even for small quark masses. The results of our quenched calculations, which have been done on a 12^3 x 24 lattice with a lattice spacing of a = 0.148 fm, do not ...
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