S Wave Kπ Scattering and Dynamically Generated Scalar Resonances

GUO Feng-Kun; PING Rong-Gang; SHEN Peng-Nian; JIANG Huan-Qing; ZOU Bing-Song

Chinese Physics C> 2006, Vol. 30> Issue(11) : 1062-1066

S Wave Kπ Scattering and Dynamically Generated Scalar Resonances

CCASTWorld Lab., Beijing 100080, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 South-West University, Chongqing 400715, China4 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China6 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

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Based on a chiral unitary approach (ChUA), S wave Kπ scattering is studied. We consider Kπ and Kη coupled channels on isospin bases. With only one parameter, the S wave Kπ scattering phase shift data below 1.2GeV can be described,and the resultant S wave scattering lengths also coincide with the experimental values well. In this approach, a scalar resonance corresponding to the κ can be generated dynamically. Its mass and width are about 725MeV and 594MeV, respectively. A resonance corresponding to the scalar K₀^*(1430) can also be generated qualitatively.

References

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GUO Feng-Kun, PING Rong-Gang, SHEN Peng-Nian, JIANG Huan-Qing and ZOU Bing-Song. S Wave Kπ Scattering and Dynamically Generated Scalar Resonances[J]. Chinese Physics C, 2006, 30(11): 1062-1066.

GUO Feng-Kun, PING Rong-Gang, SHEN Peng-Nian, JIANG Huan-Qing and ZOU Bing-Song. S Wave Kπ Scattering and Dynamically Generated Scalar Resonances[J]. Chinese Physics C, 2006, 30(11): 1062-1066. shu

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Received: 2006-04-14
Revised: 2006-04-22

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沈阳化工大学材料科学与工程学院沈阳 110142

S Wave Kπ Scattering and Dynamically Generated Scalar Resonances

Corresponding author: GUO Feng-Kun,

CCASTWorld Lab., Beijing 100080, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 South-West University, Chongqing 400715, China4 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China6 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2006-04-14

Accepted Date: 2006-04-22

Available Online: 2006-11-05

Abstract: Based on a chiral unitary approach (ChUA), S wave Kπ scattering is studied. We consider Kπ and Kη coupled channels on isospin bases. With only one parameter, the S wave Kπ scattering phase shift data below 1.2GeV can be described,and the resultant S wave scattering lengths also coincide with the experimental values well. In this approach, a scalar resonance corresponding to the κ can be generated dynamically. Its mass and width are about 725MeV and 594MeV, respectively. A resonance corresponding to the scalar K₀^*(1430) can also be generated qualitatively.

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S Wave Kπ Scattering and Dynamically Generated Scalar Resonances

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