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arXiv 1012.1286hep-phhep-ex
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eta '-> etapipi衰变中末态相互作用的关联

Relevance of final state interactions in eta'->eta pi pi decays

J. J. Sanz-Cillero

摘要:

在这次演讲中,我们对eta '->eta pi pi Dalitz图分布进行了研究。分支比的大小在1/Nc展开的框架内在U(3)手性微扰理论和共振手性理论内被适当地理解。尽管如此,为了实现对达利兹斜率参数的适当描述,必须将π介子环的么正性效应考虑在内。在考虑了末态相互作用后,我们的预测与现有的实验测量结果一致,尽管与以前的理论估计存在一些明显的差异。

英文摘要:

A study of the eta'->eta pi pi Dalitz plot distribution is presented in this talk. The size of the branching ratio is properly understood within U(3) Chiral Perturbation Theory and Resonance Chiral Theory, in the framework of the 1/Nc expansion. Nonetheless, unitarity effects of pion loops must be incorporated in order to achieve an appropriate description of the Dalitz slope parameters. After taking the final state interactions into account, our predictions become now in agreement with the available experimental measurements, although some clear differences show up with respect to previous theoretical estimates.

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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