Origin of Dynamically Generated Baryon Rsonances

T.Hyodo; D.Jido; A.Hosaka

doi:10.11804/NuclPhysRev.26.S1.001

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Volume 26 Issue S1

May 2020

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Article Navigation > Nuclear Physics Review > 2009 > 26(5): 1-6

T.Hyodo, D.Jido, A.Hosaka. Origin of Dynamically Generated Baryon Rsonances[J]. Nuclear Physics Review, 2009, 26(5): 1-6. doi: 10.11804/NuclPhysRev.26.S1.001

Citation:

T.Hyodo, D.Jido, A.Hosaka. Origin of Dynamically Generated Baryon Rsonances[J]. Nuclear Physics Review, 2009, 26(5): 1-6. doi: 10.11804/NuclPhysRev.26.S1.001

Origin of Dynamically Generated Baryon Rsonances

doi: 10.11804/NuclPhysRev.26.S1.001

T.Hyodo^1、2,
D.Jido²,
A.Hosaka³

1 PhysikDepartment, Technische Universitt München, D85747 Garching, Germany; 2 Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 6068502, Japan; 3 Research Center for Nuclear Physics(RCNP), Ibaraki, Osaka 5670047, Japan

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2020-05-11

Abstract

We study the origin of baryon resonances which are dynamically generated in the chiral unitary approach.
We propose a natural renormalization scheme for the dynamical generation of resonances using the low energy chiral interaction and a general feature of the scattering theory. A deviation of a phenomenological scattering amplitude from the natural one is interpreted by an effective pole term interaction of genuine nature which can not be described by the mesonbaryon dynamics, reminiscent of the CDD pole. Applying the present method to physical mesonbaryon scatterings, we find that the Λ(1405) resonance is dominated by a mesonbaryon component forming a KNπΣ molecularlike structure, while the N(1535) resonance requires some pole contribution.
- baryon resonances,
- dynamical generation,
- chiral unitary approach
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Origin of Dynamically Generated Baryon Rsonances

doi: 10.11804/NuclPhysRev.26.S1.001

1 PhysikDepartment, Technische Universitt München, D85747 Garching, Germany; 2 Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 6068502, Japan; 3 Research Center for Nuclear Physics(RCNP), Ibaraki, Osaka 5670047, Japan

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2020-05-11

Key words:

Abstract: We study the origin of baryon resonances which are dynamically generated in the chiral unitary approach.
We propose a natural renormalization scheme for the dynamical generation of resonances using the low energy chiral interaction and a general feature of the scattering theory. A deviation of a phenomenological scattering amplitude from the natural one is interpreted by an effective pole term interaction of genuine nature which can not be described by the mesonbaryon dynamics, reminiscent of the CDD pole. Applying the present method to physical mesonbaryon scatterings, we find that the Λ(1405) resonance is dominated by a mesonbaryon component forming a KNπΣ molecularlike structure, while the N(1535) resonance requires some pole contribution.

T.Hyodo, D.Jido, A.Hosaka. Origin of Dynamically Generated Baryon Rsonances[J]. Nuclear Physics Review, 2009, 26(5): 1-6. doi: 10.11804/NuclPhysRev.26.S1.001

Citation:

T.Hyodo, D.Jido, A.Hosaka. Origin of Dynamically Generated Baryon Rsonances[J]. Nuclear Physics Review, 2009, 26(5): 1-6. doi: 10.11804/NuclPhysRev.26.S1.001