Λ(1405) as a multiquark state

S. Choe

doi:10.1007/s100500050148

Λ(1405) as a multiquark state

S. Choe

Department of Energy and Science and Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

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 (q²) sum rule which is more reliable than Π_q(q²) sum rule, where Π₁(q²) and Π(q²) are two invariant functions of the correlator Π(q²). 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.

Original language	English
Pages (from-to)	65-73
Number of pages	9
Journal	European Physical Journal A
Volume	3
Issue number	1
DOIs	https://doi.org/10.1007/s100500050148
State	Published - 1998

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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 (q2) sum rule which is more reliable than Πq(q2) sum rule, where Π1(q2) and Π(q2) are two invariant functions of the correlator Π(q2). 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.",

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N2 - 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 (q2) sum rule which is more reliable than Πq(q2) sum rule, where Π1(q2) and Π(q2) are two invariant functions of the correlator Π(q2). 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.

AB - 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 (q2) sum rule which is more reliable than Πq(q2) sum rule, where Π1(q2) and Π(q2) are two invariant functions of the correlator Π(q2). 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.

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JO - European Physical Journal A

JF - European Physical Journal A

IS - 1

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Λ(1405) as a multiquark state

Abstract

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