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arXiv · 1804.07313

Heavy Quark Form Factors at Three Loops in the Planar Limit

J. Ablinger·J. Blümlein·P. Marquard·N. Rana·C. Schneider
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Abstract

We compute the color-planar and complete light quark non-singlet contributions to the heavy quark form factors in the case of the axialvector, scalar and pseudoscalar currents at three loops in perturbative QCD. We evaluate the master integrals applying a new method based on differential equations for general bases, which is applicable for all first order factorizing systems. The analytic results are expressed in terms of harmonic polylogarithms and real-valued cyclotomic harmonic polylogarithms.

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J. Ablinger, J. Blümlein, P. Marquard, N. Rana, C. Schneider. 2018-04-19. Heavy Quark Form Factors at Three Loops in the Planar Limit. https://doi.org/10.1016/j.physletb.2018.05.077

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