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arXiv 1201.3756hep-phnucl-th
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动力学产生的矢量重子共振中的赝标重子通道效应

Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances

E. J. Garzon, E. Oset

摘要:

在局域隐规范体系的框架下,利用耦合通道么正方法研究了矢量介子与稳定重子八重态的相互作用,包括耦合到相同量子数的赝标重子通道.我们检查的散射振幅和他们的极点,这可以与已知的$J^P=1/2^-,3/2^-$重子共振,并确定的赝标重子通道的作用,改变的宽度,并最终产生的共振的质量只有矢量重子状态的基础。

英文摘要:

We study the interaction of vector mesons with the octet of stable baryons in the framework of the local hidden gauge formalism using a coupled channels unitary approach, including also the pseudoscalar-baryon channels which couple to the same quantum numbers. We examine the scattering amplitudes and their poles, which can be associated to known $J^P=1/2^-,3/2^-$ baryon resonances, and determine the role of the pseudoscalar-baryon channels, changing the width and eventually the mass of the resonances generated with only the basis of vector-baryon states.

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