Determination of the mass of the LambdaLambda dibaryon by the method of QCD sum rules

Details Determination of the mass of the LambdaLambda dibaryon by the method of QCD sum rules Determination of the mass of the LambdaLambda dibaryon by the method of QCD sum rules

2004-05-05

arxiv.org/abs/hep-ph/0405035v1

Sov.J.Nucl.Phys. 44 (1986) 690; Yad.Fiz. 44 (1986) 1066-1074

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Latex, 1 figure, electronic version of a published paper

Scientific paper

The method of QCD sum rules is used to calculate the mass of a hypothetical stable dihyperon H with the quantum numbers of two Lambda hyperons, whose existence was predicted by R.L. Jaffe [Phys. Rev. Lett. 31, 195, 617(E) (1977)] in the framework of the MIT quark-bag model. Within the accuracy of the method of QCD sum rules, which in the present case is 20%, the results obtained here agree with those of Jaffe. However, the method of sum rules does not make it possible to determine whether the mass of the dihyperon H lies above or below the Lambda Lambda threshold (i.e., whether H is stable).

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