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arXiv 0710.5136hep-lathep-ph
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2+1味格点量子色动力学的Kl3半轻子形状因子

Kl3 semileptonic form factor from 2+1 flavour lattice QCD

P. A. Boyle, A. Jüttner, R. D. Kenway, C. T. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, J. M. Zanotti

摘要:

我们提出的第一个结果Kl 3形状因子从模拟与2+1味的动力学畴壁夸克。将我们的结果f_+(0)=0.964(5)与Kl 3衰变的最新实验结果相结合,得到|V_{us}| =0.2249(14),减小了这一重要参数的不确定性。对于手征展开式中的O(p^6)项,我们得到Δf=-0.013(5)。

英文摘要:

We present the first results for the Kl3 form factor from simulations with 2+1 flavours of dynamical domain wall quarks. Combining our result, namely f_+(0)=0.964(5), with the latest experimental results for Kl3 decays leads to |V_{us}|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p^6) term in the chiral expansion we obtain Δf=-0.013(5).

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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