Λ(1405) as a multiquark state |
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| Authors: | S Choe |
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| Institution: | (1) Special Research Centre for the Subatomic Structure of Matter, University of Adelaide, Adelaide, SA 5005, Australia, AU |
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| Abstract: | In the QCD sum rule approach we predict the Λ (1405) mass by choosing the π0Σ0 multiquark interpolating field. It is found that the mass is about 1.419 GeV from Π1 (q
2) sum rule which is more reliable than Πq (q
2) sum rule, where Πq (q
2) and Π1 (q
2) are two invariant functions of the correlator Π (q
2). We also present the sum rules for the K
+
p and the π+Σ+ multiquark states, and compare to those for the π0Σ0 multiquark state. The mass of the Λ (1600) can be also reproduced in our approach.
Received: 11 November 1997 / Revised version: 28 April 1998 |
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| Keywords: | PACS:24 85 +p Quarks gluons and QCD in nuclei and nuclear processes – 14 20 -c Baryons (including antiparticles) – 21 10 Dr Binding energies and masses |
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