Abstract
An analytical expression for the three-loop form factors for ggH and γγH is derived for the contributions which involve massless quark loops. The result is expressed in terms of harmonic polylogarithms. It fully agrees with previously obtained kinematical expansions, and confirms a recent semi-numerical approximation which extends over the full kinematic range.
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24 August 2020
As pointed out in ref. [1], the Hg-term of eq. (3.7b) in the original paper is missing a renormalization scale-dependent prefactor.
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Harlander, R.V., Prausa, M. & Usovitsch, J. The light-fermion contribution to the exact Higgs-gluon form factor in QCD. J. High Energ. Phys. 2019, 148 (2019). https://doi.org/10.1007/JHEP10(2019)148
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DOI: https://doi.org/10.1007/JHEP10(2019)148