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

S. A. Larin·V. A. Matveev·A. A. Ovchinnikov·A. A. Pivovarov
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Abstract

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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S. A. Larin, V. A. Matveev, A. A. Ovchinnikov, A. A. Pivovarov. 2004-05-05. Determination of the mass of the LambdaLambda dibaryon by the method of QCD sum rules. https://arxiv.org/abs/hep-ph/0405035

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