Kaon-baryon coupling constants in the QCD sum rule approach

Seungho Choe

doi:10.1103/PhysRevC.62.025204

Kaon-baryon coupling constants in the QCD sum rule approach

Seungho Choe

Department of Energy and Science and Engineering

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

3 Scopus citations

Abstract

We improve our previous QCD sum rule calculation on g_KNΛ and g_KNΣ coupling constants by including the contributions from higher dimensional condensates, 〈q̄g_sσ · Gq〉 and 〈q̄q〉〈(α_s/π)G²), in the OPE. It is found that the contribution of these condensates is non-negligible compared to that of the quark condensates. Using a best-fit analysis we find \g_KNΛ| = 2.49± 1.25 and \g_KNΣ| = 0.395±0.377.

Original language	English
Article number	025204
Pages (from-to)	252041-252045
Number of pages	5
Journal	Physical Review C - Nuclear Physics
Volume	62
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.62.025204
State	Published - Aug 2000

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title = "Kaon-baryon coupling constants in the QCD sum rule approach",

abstract = "We improve our previous QCD sum rule calculation on gKNΛ and gKNΣ coupling constants by including the contributions from higher dimensional condensates, 〈{\=q}gsσ · Gq〉 and 〈{\=q}q〉〈(αs/π)G2), in the OPE. It is found that the contribution of these condensates is non-negligible compared to that of the quark condensates. Using a best-fit analysis we find \gKNΛ| = 2.49± 1.25 and \gKNΣ| = 0.395±0.377.",

author = "Seungho Choe",

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AB - We improve our previous QCD sum rule calculation on gKNΛ and gKNΣ coupling constants by including the contributions from higher dimensional condensates, 〈q̄gsσ · Gq〉 and 〈q̄q〉〈(αs/π)G2), in the OPE. It is found that the contribution of these condensates is non-negligible compared to that of the quark condensates. Using a best-fit analysis we find \gKNΛ| = 2.49± 1.25 and \gKNΣ| = 0.395±0.377.

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Kaon-baryon coupling constants in the QCD sum rule approach

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