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arXiv 1101.2685hep-lathep-ph
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改进的交错费米子$B_K$中的有限体积效应

Finite volume effects in $B_K$ with improved staggered fermions

Jangho Kim, Chulwoo Jung, Hyung-Jin Kim, Weonjong Lee, Stephen R. Sharpe

摘要:

我们扩展了我们最近的未淬灭($N_f=2+1$风味)计算$B_K$使用改进的交错费米子,包括在适合的有限体积位移预测的单圈交错手征微扰理论。最终结果是使连续极限的结果降低0.6%。这种变化略小于我们先前基于不同体积之间的直接比较对有限体积效应的估计。为了在合理的时间内包括有限体积效应,我们发现有必要使用图形处理单元来计算它们。

英文摘要:

We extend our recent unquenched ($N_f=2+1$ flavor) calculation of $B_K$ using improved staggered fermions by including in the fits the finite volume shift predicted by one-loop staggered chiral perturbation theory. The net result is to lower the result in the continuum limit by 0.6%. This shift is slightly smaller than our previous estimate of finite volume effects based on a direct comparison between different volumes. To include the finite volume effects in a reasonable time, we found it necessary to calculate them using Graphics Processing Units.

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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