arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.2427hep-phhep-ex
收藏

$O(a_s^3)$上的重味算子矩阵元

Heavy flavor operator matrix elements at $O(a_s^3)$

I. Bierenbaum, J. Blümlein, S. Klein

摘要:

在渐近区$Q^2 \gg m^2$中,深非弹性散射中的重夸克效应可用重味算符矩阵元来描述。目前${\sf NLO}$已知这些对象的完整解析表达式。我们目前的第一个结果固定的时刻在${\sf NNLO}$。这涉及到重新计算相应的${\sf NNLO}$反常尺寸的固定力矩,我们从而确认。

英文摘要:

The heavy quark effects in deep--inelastic scattering in the asymptotic regime $Q^2 \gg m^2$ can be described by heavy flavor operator matrix elements. Complete analytic expressions for these objects are currently known to ${\sf NLO}$. We present first results for fixed moments at ${\sf NNLO}$. This involves a recalculation of fixed moments of the corresponding ${\sf NNLO}$ anomalous dimensions, which we thereby confirm.

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。

↑