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arXiv 0811.0341hep-ph
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用B到K π衰变寻找新物理

Searching For New Physics With B to K pi Decays

M. Ciuchini, E. Franco, G. Martinelli, M. Pierini, L. Silvestrini

摘要:

我们提出了一种方法来量化的标准模型的不确定性,在B到K π衰变的实验数据,假设功率计数提供了一个合理的估计,在1/mb的扩展的子领先条款。利用这种方法,我们表明,目前的B到K π数据是兼容的标准模型。我们分析的模式,需要复制的B到K π数据的子领导条款,并认为不需要太大的子领导条款。最后,我们发现S(KS pi 0)对强子不确定性相当不敏感,并得到标准模型估计S(KS pi 0)=0.74 +-0.04。

英文摘要:

We propose a method to quantify the Standard Model uncertainty in B to K pi decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in the 1/mb expansion. Using this method, we show that present B to K pi data are compatible with the Standard Model. We analyze the pattern of subleading terms required to reproduce the B to K pi data and argue that anomalously large subleading terms are not needed. Finally, we find that S(KS pi0) is fairly insensitive to hadronic uncertainties and obtain the Standard Model estimate S(KS pi0)=0.74 +- 0.04.

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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