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We present the most precise value for the Higgs boson cross-section in the gluon-fusion production mode at the LHC. Our result is based on a perturbative expansion through N$^3$LO in QCD, in an effective theory where the top-quark is…

We present the next-to-leading order QCD corrections to Higgs boson pair production in vector boson fusion, including the leading operators in the framework of Higgs Effective Field Theory (HEFT). The corresponding calculation is based on…

High Energy Physics - Phenomenology · Physics 2025-07-22 Jens Braun , Pia Bredt , Gudrun Heinrich , Marius Höfer

We consider an extension of the Standard Model with an arbitrary number of heavy quarks having general couplings to the Higgs boson. We construct an effective Lagrangian integrating out quarks that are heavier than half the mass of the…

High Energy Physics - Phenomenology · Physics 2015-05-28 Elisabetta Furlan

We present the master integrals relevant for computing the complete set of leading-colour analytic helicity amplitudes for top-quark pair production via gluon fusion at two-loops in QCD. We include corrections due to massive fermion loops…

High Energy Physics - Phenomenology · Physics 2021-11-01 Ekta Chaubey

Higgs boson production associated with a top quark pair is an important process in studying the nature of the newly discovered Higgs boson at the LHC. In this letter, we report on our calculations including the next-to-leading order (NLO)…

High Energy Physics - Phenomenology · Physics 2014-09-24 Zhang Yu , Ma Wen-Gan , Zhang Ren-You , Chen Chong , Guo Lei

The leading electroweak MSSM two-loop corrections to the $\rho$-parameter are calculated. They are obtained by evaluating the two-loop self-energies of the Z and the W boson at O(Gf^2 m_t^4) in the limit of heavy scalar quarks. A very…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Heinemeyer , G. Weiglein

The computation of two-loop amplitudes for the production of multiple Higgs and electroweak gauge bosons via gluon fusion with exact dependence on quark masses relies primarily on numerical methods. We propose a framework that enables their…

High Energy Physics - Phenomenology · Physics 2024-11-13 Charalampos Anastasiou , Julia Karlen , George Sterman , Aniruddha Venkata

We consider the full set of master integrals with internal top-and $W$-propagators contributing to the three-loop Higgs self-energy diagrams of order ${\mathcal O}(\alpha^2 \alpha_s)$. We split the master integrals into a system relevant to…

High Energy Physics - Phenomenology · Physics 2022-11-30 Ekta Chaubey , Ina Hönemann , Stefan Weinzierl

We compute the two-loop mixed QCD-Electroweak corrections to $q \overline{q} \to H g$ and its crossed channels $q g \to H q$, $\overline{q} g \to H \overline{q}$, limiting ourselves to the contribution of light virtual quarks. We compute…

High Energy Physics - Phenomenology · Physics 2022-07-18 Marco Bonetti , Erik Panzer , Lorenzo Tancredi

We present predictions for the inclusive cross section for Higgs boson production by gluon--gluon fusion in proton collisions at $\sqrt{s}=8$ TeV. Our calculation is accurate up to next-to-next-to-leading order in QCD perturbation theory…

High Energy Physics - Phenomenology · Physics 2015-06-05 D. de Florian , M. Grazzini

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…

High Energy Physics - Phenomenology · Physics 2022-08-24 Long Chen , Joshua Davies , Gudrun Heinrich , Stephen P. Jones , Matthias Kerner , Go Mishima , Johannes Schlenk , Matthias Steinhauser

Understanding the Higgs potential by measuring its self-interactions is fundamental in answering several big questions, such as electroweak symmetry breaking, electroweak baryogenesis, electroweak phase transition, and electroweak vacuum…

High Energy Physics - Phenomenology · Physics 2020-11-16 Long-Bin Chen , Hai Tao Li , Hua-Sheng Shao , Jian Wang

We compute the complete next-to-leading order SUSY-QCD corrections for the associated production of a charged Higgs boson with a top quark via bottom-gluon fusion. We investigate the applicability of the bottom parton description in detail.…

High Energy Physics - Phenomenology · Physics 2009-07-09 Tilman Plehn

This thesis studies the pseudoscalar Higgs boson production via gluon fusion in the EFT framework in a CP-conserving model. First, it presents the di-pseudoscalar Higgs boson production cross-section via gluon fusion till NNLO with the…

High Energy Physics - Phenomenology · Physics 2024-03-13 Arunima Bhattacharya

Higgs production from gluon fusion is sensitive to the properties of heavy colored fermions and to the Yukawa couplings, (Y_F M_F)/v, of these particles to the Higgs boson. We compute the two--loop, ${\cal O}((Y_F M_F)^3/v^3)$ contributions…

High Energy Physics - Phenomenology · Physics 2014-02-13 Sally Dawson , Elisabetta Furlan

The discrepancy between the CDF measurement and the Standard Model theoretical prediction for the $W$-boson mass underscores the importance of conducting high-precision studies on the $W$ boson, which is one of the predominant objectives of…

High Energy Physics - Phenomenology · Physics 2024-12-09 Zhe Li , Ren-You Zhang , Shu-Xiang Li , Xiao-Feng Wang , Wen-Jie He , Liang Han , Yi Jiang , Qing-hai Wang

The observation of double and triple scalar boson production at hadron colliders could provide key information on the Higgs self couplings and the potential. As for single Higgs production the largest rates for multiple Higgs production…

High Energy Physics - Phenomenology · Physics 2015-06-22 F. Maltoni , E. Vryonidou , M. Zaro

We compute three-loop corrections to the Higgs-gluon form factor, incorporating the top quark mass dependence. Our method is based on the combination of expansions around the top threshold and for large top quark mass, using conformal…

High Energy Physics - Phenomenology · Physics 2020-09-18 Joshua Davies , Ramona Groeber , Andreas Maier , Thomas Rauh , Matthias Steinhauser

We study the production of Higgs boson pairs via gluon fusion at the LHC in the Two-Higgs-Doublet Model. We present predictions at NLO accuracy in QCD, matched to parton showers through the MC@NLO method. A dedicated reweighting technique…

High Energy Physics - Phenomenology · Physics 2014-10-01 Benoit Hespel , David Lopez-Val , Eleni Vryonidou

We compute next-to-leading order (NLO) QCD corrections to the production of two massive electroweak bosons in gluon fusion. We consider both the prompt production process $gg \to VV$ and the production mediated by an exchange of an…

High Energy Physics - Phenomenology · Physics 2016-08-24 Fabrizio Caola , Matthew Dowling , Kirill Melnikov , Raoul Röntsch , Lorenzo Tancredi