Abstract
We apply the leading-log high-energy resummation technique recently derived by some of us to the transverse momentum distribution for production of a Higgs boson in gluon fusion. We use our results to obtain information on mass-dependent corrections to this observable, which is only known at leading order when exact mass dependence is included. In the low p T region we discuss the all-order exponentiation of collinear bottom mass logarithms. In the high p T region we show that the infinite top mass approximation loses accuracy as a power of p T, while the accuracy of the high-energy approximation is approximately constant as p T grows. We argue that a good approximation to the NLO result for p T ≳ 200 GeV can be obtained by combining the full LO result with a K-factor computed using the high-energy approximation.
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Caola, F., Forte, S., Marzani, S. et al. The Higgs transverse momentum spectrum with finite quark masses beyond leading order. J. High Energ. Phys. 2016, 150 (2016). https://doi.org/10.1007/JHEP08(2016)150
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DOI: https://doi.org/10.1007/JHEP08(2016)150