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Two-loop light-quark Electroweak corrections to Higgs boson pair production in gluon fusion
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abstract
We compute two-loop electroweak corrections to double Higgs boson production in gluon fusion mediated by light quarks in a fully analytical way. We determine a basis of master integrals satisfying canonical differential equations in $\mathrm{d}\log$ form, enhanced by subsequent rotations to remove unnecessary functions that do not appear in the analytic expressions of the amplitudes. We determine the integration constants by matching our expressions to the large mass expansion limit of the canonical integrals. We express the solution of differential equations in terms of Chen iterated integrals up to transcendental weight six over logarithmic kernels with algebraic arguments, and further decompose them by employing a basis of uniform weight functions. By deriving differential equations for such basis, we provide numerical results as well as routines for optimised numerical evaluations.
Forward citations
Cited by 3 Pith papers
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Electroweak corrections to Higgs boson pair production: The quark channel
Mixed QCD-EW corrections to qqbar -> HH computed analytically via differential equations, matched to large-mass limit, implemented in POWHEG-BOX, showing up to +10% effect on invariant mass distribution near threshold.
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Fully differential Higgs boson pair production at N$^3$LO with top quark mass effects
First fully differential N3LO QCD predictions for gg->hh in the heavy-top limit, with NLO top-mass effects added; heavy-top scale uncertainty shrinks about 3x, to roughly 1-3%.
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Analytic two-loop electroweak corrections at high energies
Analytic two-loop electroweak corrections to four-point amplitudes are computed in the high-energy limit of the Standard Model, applied to Higgs pair production where logarithmic and power corrections yield sizeable effects.
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