On a possible tetraquark cousin of the Theta+
Lipkin, Harry J.
HEP, Cavendish Laboratory, University of Cambridge
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Karliner, M., & Lipkin, H. J. (2004). On a possible tetraquark cousin of the Theta+. http://www.dspace.cam.ac.uk/handle/1810/224279
If a narrow + pentaquark exists, it is likely that a ud¯s–ud triquark-diquark configuration is a significant component of its wave function. If so, the mechanism responsible for the binding of a triquark and a diquark is also likely to bind the triquark to an ¯s antiquark. We discuss the expected properties of such a ud¯s–¯s tetraquark meson. In particular, we point out that for a 0+ isoscalar ud¯s¯s meson the lowest allowed decay mode is a four-body KK channel with a very small phase space and a distinctive experimental signature.
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