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arXiv 0705.3279hep-ph
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手征微扰理论中的ω ^- -> Xi^- pi^+ pi^-衰变

The Decay Omega^- -> Xi^- pi^+ pi^- in Chiral Perturbation Theory

Oleg Antipin, Jusak Tandean, G. Valencia

摘要:

本文在重子手征微扰理论中研究了ω ^- -> Xi^- pi^+ pi^-衰变。在首阶,衰变完全由Xi^{*0}(1530)中间态主导,预测的速率和Xi^-pi^+质量分布与现有数据相矛盾。可以通过考虑次领先顺序的额外贡献来解决这个冲突。

英文摘要:

We study the decay Omega^- -> Xi^- pi^+ pi^- in heavy-baryon chiral perturbation theory. At leading order, the decay is completely dominated by the Xi^{*0}(1530) intermediate state, and the predicted rate and Xi^-pi^+ mass distribution are in conflict with currently available data. It is possible to resolve this conflict by considering additional contributions at next-to-leading order.

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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