Resonance properties from a coupled channel meson exchange model

HUANG Fei

doi:10.1088/1674-1137/33/12/037

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1273-1278 DOI: 10.1088/1674-1137/33/12/037

Resonance properties from a coupled channel meson exchange model

HUANG Fei

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Abstract：
In this talk, I present the results on the pole structure of pion-nucleon scattering in an analytic model based on meson exchange. The analytic properties of scattering amplitudes provide important information. Besides the cuts, the poles and zeros on the different Riemann sheets determine the global behavior of the amplitude on the physical axis. Pole positions and residues allow for a parameterization of resonances in a well-defined way, free of assumptions for the background and energy dependence of the resonance part. This is a necessary condition to relate resonance contributions in different reactions.

References

[1]

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HUANG Fei. Resonance properties from a coupled channel meson exchange model[J]. Chinese Physics C, 2009, 33(12): 1273-1278. doi: 10.1088/1674-1137/33/12/037

HUANG Fei. Resonance properties from a coupled channel meson exchange model[J]. Chinese Physics C, 2009, 33(12): 1273-1278. doi: 10.1088/1674-1137/33/12/037 shu

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Received: 2009-08-07
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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

Resonance properties from a coupled channel meson exchange model

Received Date: 2009-08-07

Accepted Date: 1900-01-01

Available Online: 2009-12-05

Abstract:

In this talk, I present the results on the pole structure of pion-nucleon scattering in an analytic model based on meson exchange. The analytic properties of scattering amplitudes provide important information. Besides the cuts, the poles and zeros on the different Riemann sheets determine the global behavior of the amplitude on the physical axis. Pole positions and residues allow for a parameterization of resonances in a well-defined way, free of assumptions for the background and energy dependence of the resonance part. This is a necessary condition to relate resonance contributions in different reactions.

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Resonance properties from a coupled channel meson exchange model

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Resonance properties from a coupled channel meson exchange model

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