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arXiv 1010.0243hep-ph
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远离强子终点的阈重算的有效性

On the effectiveness of threshold resummation away from hadronic endpoint

Christian W. Bauer, Nicholas Daniel Dunn, Andrew Hornig

摘要:

在软共线有效理论的背景下,我们参数化阈值效应的增强远离强子端点,由于急剧下降的性质的部分子分布函数,出现。这是通过将软辐射和共线辐射的特征尺度λ与pdf的形状直接联系起来以独立于过程的方式实现的。这使我们能够量化的功率校正部分子阈值作为不变的质量和最终状态的快度的函数重新确认。在SCET的上下文中,能够以独立于过程的方式计算λ,使我们能够在与pdf积分后确定阈值重建的正确尺度,而无需任何额外的过程。

英文摘要:

We parameterize the enhancement of threshold effects away from hadronic endpoint that arise due to the steeply falling nature of parton distribution functions, within the context of soft-collinear effective theory. This is accomplished in a process-independent way by directly linking the charac- teristic scale of soft and collinear radiation, λ, to the shape of the pdfs. This allows us quantify the power corrections to partonic threshold resummation as a function of the invariant mass and rapidity of the final state. In the context of SCET, being able to compute λin a process-independent manner allows us to determine the correct scale for threshold resummation after integration with the pdfs, without any additional procedure.

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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