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arXiv 0812.3114hep-ph
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τ衰变中对偶破坏引起的系统误差的估计

Estimate of the systematic error in tau decay due to duality violations

Oscar Cata, Maarten Golterman, Santiago Peris

摘要:

一个物理动机的分析,这是适合的数据的帮助下,我们估计的大小可能的对偶违反强子τ衰变。结果是,与这些违规相关的不确定性可能会影响总衰变宽度的α_s测定,我们估计其水平为δ α_s(m_tau)\sim 0.003-0.010。因此,它不能被忽视。

英文摘要:

With the help of a physically motivated ansatz, which is fitted to the data, we estimate the size of possible duality violations in hadronic tau decay. The result is that the uncertainty associated with these violations could impact the alpha_s determination from the total decay width at a level which we estimate to be δalpha_s(m_tau) \sim 0.003-0.010. Consequently, it cannot be neglected.

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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