$\mathcal{O}(\alpha_s^3)$的大量形式因素

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022) Pub Date : 2022-07-14 DOI:10.22323/1.416.0006

Kay Schonwald

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摘要

我们报告了我们最近使用基于围绕奇异和规则运动点的主积分的级数展开和数值匹配的半数值方法计算大质量夸克形状因子。该方法允许以至少7位有效数字的精度覆盖虚拟性$s$的负值和正值的整个运动学范围。

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Massive form factors at $\mathcal{O}(\alpha_s^3)$

We report on our recent calculation of massive quark form factors using a semi-numerical approach based on series expansions of the master integrals around singular and regular kinematic points and numerical matching. The methods allows to cover the whole kinematic range of negative and positive values of the virtuality $s$ with at least seven significant digits accuracy.

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Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022)

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