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arXiv 0710.2853hep-phnucl-th
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奇异强子与SU(3)手征动力学

Exotic hadrons and SU(3) chiral dynamics

Tetsuo Hyodo, Daisuke Jido, Atsushi Hosaka

摘要:

我们探讨了在强子散射中动态产生奇异强子的可能性。构造了任意强子与Nambu-Goldstone玻色子的s波散射振幅,使其满足么正性条件和手征低能定理.我们发现,在大多数情况下,奇异通道的手征相互作用是排斥性的,并且可能的吸引力相互作用的强度是唯一确定的。结果表明,奇异通道中的吸引相互作用不足以产生束缚态,而非奇异通道中的相互作用产生束缚态,这被认为是自然界中观察到的某些共振的起源.

英文摘要:

We explore a possibility to generate exotic hadrons dynamically in the scattering of hadrons. The s-wave scattering amplitude of an arbitrary hadron with the Nambu-Goldstone boson is constructed so as to satisfy the unitarity condition and the chiral low energy theorem. We find that the chiral interaction for the exotic channels is in most cases repulsive, and that the strength of the possible attractive interaction is uniquely determined. We show that the attractive interaction in exotic channels is not strong enough to generate a bound state, while the interaction in nonexotic channel generate bound states which are considered to be the origin of some resonances observed in nature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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