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Top-Yukawa- and light-quark-induced electroweak corrections to Higgs-Pair Production via Gluon Fusion

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If you have a question about this talk, please contact Terry Generet .

Gluon fusion, ggā†’HH, is the dominant Higgs-pair production process at the Large Hadron Collider (LHC) with direct sensitivity to the trilinear Higgs self-interaction. The process is loop-induced, with the leading contribution arising from top-quark loops in the Standard Model, and QCD corrections are known to significantly enhance the cross section. With the anticipated accuracies achievable at the high-luminosity LHC , the theoretical uncertainties will be of increased relevance to compete with the experimental precision at the level of less than 30%. Therefore, as a first step in this direction, we compute next-to-leading-order electroweak contributions to ggā†’HH from two sources: top-Yukawaā€“induced and light-quarkā€“induced effects. I will present their impact on the total cross section and on the Higgs-pair invariant-mass spectrum, highlighting threshold features and the kinematic regions where electroweak effects reach the few-to-ten per cent level.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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Goldsmiths 1 & https://zoom.us/j/96836714124 Bateman Auditorium, Gonville & Caius College, Cambridge, CB2 1TA West Court, Clare Hall, Herschel Road

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