Time delayed K+ N reactions and exotic baryon resonances
Time delayed K+ N reactions and exotic baryon resonances
复制标题
延时 K N 反应和奇异重子共振
DOI：
10.1088/0954-3899/29/6/303
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
K. Khemchandani
中科院分区：
文献类型：
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作者：
N. Kelkar;M. Nowakowski;K. Khemchandani
在过去的三十年里，来自理论和实验方面的关于B=S的奇异重子共振的证据和线索一直伴随着我们。人们普遍接受这些Z*共振的状况不佳，部分原因是对五夸克重子的偏见，部分原因是认为对奇异态的存在的证明必须是严格的。这可以指收集的数据的质量和数量，也可以指在这些共振研究中应用的分析方法。因此，似乎必须利用所有的可能性和方面。我们通过分析K+N散射中的时间延迟，遇到接近分波分析中极值的奇异Z*共振的清晰信号来做到这一点。
Evidences and hints, both from the theoretical and experimental side, of exotic baryon resonances with B=S, have been with us for the last thirty years. The poor status of the general acceptance of these Z* resonances is partly due to the prejudice against penta-quark baryons and partly due to the opinion that a proof of the existence of exotic states must be rigorous. This can refer to the quality and amount of data gathered, and also to the analytical methods applied in the study of these resonances. It seems then mandatory that all possibilities and aspects be exploited. We do that by analyzing the time delay in K+ N scattering, encountering clear signals of the exotic Z* resonances close to the pole values found in partial wave analyses.