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arXiv · 2409.20354

The next-to-leading order Higgs impact factor at physical top mass: The real corrections

Francesco Giovanni Celiberto·Luigi Delle Rose·Michael Fucilla·Gabriele Gatto·Alessandro Papa
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Abstract

We compute the real corrections to the impact factor for the production of a forward Higgs boson, retaining full top-mass dependence. We demonstrate that the rapidity divergence is the one predicted by the BFKL factorization and perform the explicit subtraction in the BFKL scheme. We show that the IR-structure of the impact factor is the expected one and that, in the infinite-top-mass approximation, the previously known result is recovered. We also verify that the impact factor vanishes when the transverse momenta of the $t$-channel Reggeon goes to zero, in agreement with its gauge-invariant definition, exploiting the $m_t \rightarrow \infty$ expansion up to the next-to-next-to-leading order.

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Francesco Giovanni Celiberto, Luigi Delle Rose, Michael Fucilla, Gabriele Gatto, Alessandro Papa. 2024-09-30. The next-to-leading order Higgs impact factor at physical top mass: The real corrections. https://arxiv.org/abs/2409.20354

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