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Dr Stephen Jones' Outputs (19)

Complete Next-to-Leading Order QCD Corrections to ZZ Production in Gluon Fusion. (2025)
Journal Article
Agarwal, B., Jones, S., Kerner, M., & von Manteuffel, A. (2025). Complete Next-to-Leading Order QCD Corrections to ZZ Production in Gluon Fusion. Physical Review Letters, 134(3), Article 031901. https://doi.org/10.1103/PhysRevLett.134.031901

We calculate the complete next-to-leading order (NLO) QCD corrections to loop-induced gg→ZZ production including full top-quark mass effects. The two-loop virtual corrections are obtained by combining analytic results for the massless, Higgs-mediated... Read More about Complete Next-to-Leading Order QCD Corrections to ZZ Production in Gluon Fusion..

Electroweak corrections to Higgs boson pair production: the top-Yukawa and self-coupling contributions (2024)
Journal Article
Heinrich, G., Jones, S. P., Kerner, M., Stone, T. W., & Vestner, A. (2024). Electroweak corrections to Higgs boson pair production: the top-Yukawa and self-coupling contributions. Journal of High Energy Physics, 2024(11), Article 40. https://doi.org/10.1007/jhep11%282024%29040

We present results for the Yukawa-enhanced and Higgs self-coupling type electroweak corrections to di-Higgs production in gluon fusion. The calculation of the corresponding four-scale, two-loop amplitude is carried out retaining the exact symbolic de... Read More about Electroweak corrections to Higgs boson pair production: the top-Yukawa and self-coupling contributions.

Dissecting polytopes: Landau singularities and asymptotic expansions in 2 → 2 scattering (2024)
Journal Article
Gardi, E., Herzog, F., Jones, S., & Ma, Y. (2024). Dissecting polytopes: Landau singularities and asymptotic expansions in 2 → 2 scattering. Journal of High Energy Physics, 2024(8), Article 127. https://doi.org/10.1007/jhep08%282024%29127

Parametric representations of Feynman integrals have a key property: many, frequently all, of the Landau singularities appear as endpoint divergences. This leads to a geometric interpretation of the singularities as faces of Newton polytopes, which f... Read More about Dissecting polytopes: Landau singularities and asymptotic expansions in 2 → 2 scattering.

Event generators for high-energy physics experiments (2024)
Journal Article
Campbell, J. M., Diefenthaler, M., Hobbs, T. J., Höche, S., Isaacson, J., Kling, F., Mrenna, S., Reuter, J., Alioli, S., Andersen, J. R., Andreopoulos, C., Ankowski, A. M., Aschenauer, E. C., Ashkenazi, A., Baker, M. D., Barrow, J. L., van Beekveld, M., Bewick, G., Bhattacharya, S., Bierlich, C., …Zapp, K. (2024). Event generators for high-energy physics experiments. SciPost Physics, 16(5), Article 130. https://doi.org/10.21468/scipostphys.16.5.130

We provide an overview of the status of Monte-Carlo event generators for high-energy particle physics. Guided by the experimental needs and requirements, we highlight areas of active development, and opportunities for future improvements. Particular... Read More about Event generators for high-energy physics experiments.

Two-loop amplitudes for t t ¯ H production: the quark-initiated N f -part (2024)
Journal Article
Agarwal, B., Heinrich, G., Jones, S. P., Kerner, M., Klein, S. Y., Lang, J., …Olsson, A. (2024). Two-loop amplitudes for t t ¯ H production: the quark-initiated N f -part. Journal of High Energy Physics, 2024(5), Article 13. https://doi.org/10.1007/jhep05%282024%29013

We present numerical results for the two-loop virtual amplitude entering the NNLO corrections to Higgs boson production in association with a top quark pair at the LHC, focusing, as a proof of concept of our method, on the part of the quark-initiated... Read More about Two-loop amplitudes for t t ¯ H production: the quark-initiated N f -part.

Numerical scattering amplitudes with pySecDec (2023)
Journal Article
Heinrich, G., Jones, S., Kerner, M., Magerya, V., Olsson, A., & Schlenk, J. (2024). Numerical scattering amplitudes with pySecDec. Computer Physics Communications, 295, Article 108956. https://doi.org/10.1016/j.cpc.2023.108956

We present a major update of the program pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The new version enables the evaluation of multi-loop integrals as well as amplitudes in a highly distributed and flexible... Read More about Numerical scattering amplitudes with pySecDec.

The on-shell expansion: from Landau equations to the Newton polytope (2023)
Journal Article
Gardi, E., Herzog, F., Jones, S., Ma, Y., & Schlenk, J. (2023). The on-shell expansion: from Landau equations to the Newton polytope. Journal of High Energy Physics, 2023(7), Article 197. https://doi.org/10.1007/jhep07%282023%29197

We study the application of the method of regions to Feynman integrals with massless propagators contributing to off-shell Green’s functions in Minkowski spacetime (with non-exceptional momenta) around vanishing external masses, pi2→0. This on-shell... Read More about The on-shell expansion: from Landau equations to the Newton polytope.

Machine learning and LHC event generation (2023)
Journal Article
Butter, A., Plehn, T., Schumann, S., Badger, S., Caron, S., Cranmer, K., …Zupan, J. (2023). Machine learning and LHC event generation. SciPost Physics, 14(4), Article 079. https://doi.org/10.21468/scipostphys.14.4.079

First-principle simulations are at the heart of the high-energy physics research program. They link the vast data output of multi-purpose detectors with fundamental theory predictions and interpretation. This review illustrates a wide range of applic... Read More about Machine learning and LHC event generation.

Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist (2023)
Journal Article
Huss, A., Huston, J., Jones, S., & Pellen, M. (2023). Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist. Journal of Physics G: Nuclear and Particle Physics, 50(4), Article 043001. https://doi.org/10.1088/1361-6471/acbaec

Les Houches activities in 2021 were truncated due to the lack of an in-person component. However, given the rapid progress in the field and the restart of the LHC, we wanted to continue the bi-yearly tradition of updating the standard model precision... Read More about Les Houches 2021—physics at TeV colliders: report on the standard model precision wishlist.

Exclusive J/ψ and ϒ production in high-energy pp and p-Pb collisions (2022)
Journal Article
Flett, C., Jones, S., Martin, A., Ryskin, M., & Teubner, T. (2022). Exclusive J/ψ and ϒ production in high-energy pp and p-Pb collisions. Physical Review D, 106(7), https://doi.org/10.1103/physrevd.106.074021

We present a formalism for determining the cross section for exclusive heavy vector meson production (J/ψ,Υ) as a function of rapidity, in both high-energy proton-proton and proton-heavy ion collisions, at next-to-leading order in QCD. We compare and... Read More about Exclusive J/ψ and ϒ production in high-energy pp and p-Pb collisions.

ZH production in gluon fusion at NLO in QCD (2022)
Journal Article
Chen, L., Davies, J., Heinrich, G., Jones, S. P., Kerner, M., Mishima, G., Schlenk, J., & Steinhauser, M. (2022). ZH production in gluon fusion at NLO in QCD. Journal of High Energy Physics, 2022(8), Article 56. https://doi.org/10.1007/jhep08%282022%29056

We present fully differential next-to-leading order results for Higgs production in association with a Z boson in gluon fusion. Our two-loop virtual contributions are evaluated numerically using sector decomposition, including full top-quark mass eff... Read More about ZH production in gluon fusion at NLO in QCD.

Top-quark mass effects in H+jet and H+2 jets production (2022)
Journal Article
Chen, X., Huss, A., Jones, S., Kerner, M., Lang, J.-N., Lindert, J., & Zhang, H. (2022). Top-quark mass effects in H+jet and H+2 jets production. Journal of High Energy Physics, 2022(3), Article 096. https://doi.org/10.1007/jhep03%282022%29096

We present calculations of Higgs boson production via gluon-gluon fusion in association with one or two additional jets at next-to-leading order in QCD. The calculation of H+jet is exact in the treatment of the top-quark mass, whereas for the H+2 jet... Read More about Top-quark mass effects in H+jet and H+2 jets production.

Predictions of exclusive ϒ photoproduction at the LHC and future colliders (2022)
Journal Article
Flett, C., Jones, S., Martin, A., Ryskin, M., & Teubner, T. (2022). Predictions of exclusive ϒ photoproduction at the LHC and future colliders. Physical Review D, 105(3), https://doi.org/10.1103/physrevd.105.034008

The cross section for exclusive ϒ ultraperipheral photoproduction at present and future colliders is determined using the low x gluon parton distribution function extracted from an analysis of exclusive J=ψ measurements performed at the Hadron-Electr... Read More about Predictions of exclusive ϒ photoproduction at the LHC and future colliders.

Expansion by regions with pySecDec (2022)
Journal Article
Heinrich, G., Jahn, S., Jones, S., Kerner, M., Langer, F., Magerya, V., Põldaru, A., Schlenk, J., & Villa, E. (2022). Expansion by regions with pySecDec. Computer Physics Communications, 273, Article 108267. https://doi.org/10.1016/j.cpc.2021.108267

We discuss the technique of expansion by regions from a geometric perspective, and its implementation within pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The program offers an automated way to perform asympto... Read More about Expansion by regions with pySecDec.

Exclusive heavy vector meson electroproduction to NLO in collinear factorisation (2021)
Journal Article
Flett, C., Gracey, J., Jones, S., & Teubner, T. (2021). Exclusive heavy vector meson electroproduction to NLO in collinear factorisation. Journal of High Energy Physics, 2021(8), https://doi.org/10.1007/jhep08%282021%29150

We compute the exclusive electroproduction, γ*p → Vp, of heavy quarkonia V to NLO in the collinear factorisation scheme, which has been formally proven for this process. The inclusion of an off-shell virtuality Q2 carried by the photon extends the ph... Read More about Exclusive heavy vector meson electroproduction to NLO in collinear factorisation.

Two-loop helicity amplitudes for gg → ZZ with full top-quark mass effects (2021)
Journal Article
Agarwal, B., Jones, S. P., & von Manteuffel, A. (2021). Two-loop helicity amplitudes for gg → ZZ with full top-quark mass effects. Journal of High Energy Physics, 2021(5), Article 256. https://doi.org/10.1007/jhep05%282021%29256

We calculate the two-loop QCD corrections to gg → ZZ involving a closed top-quark loop. We present a new method to systematically construct linear combinations of Feynman integrals with a convergent parametric representation, where we also allow for... Read More about Two-loop helicity amplitudes for gg → ZZ with full top-quark mass effects.

ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence (2021)
Journal Article
Chen, L., Heinrich, G., Jones, S. P., Kerner, M., Klappert, J., & Schlenk, J. (2021). ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence. Journal of High Energy Physics, 2021, Article 125. https://doi.org/10.1007/jhep03%282021%29125

We present results for the two-loop helicity amplitudes entering the NLO QCD corrections to the production of a Higgs boson in association with a Z -boson in gluon fusion. The two-loop integrals, involving massive top quarks, are calculated numerical... Read More about ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence.