Matthias Steinhauser

activity

19942026

most cited${\cal O}(α\as \ln m_t^2)$ Non-Universal Corrections to the Decay Rate

Γ (Z \to b b ˉ)

15 citations · 24 across the 13 of their papers we have counts for

collaborators

14 papers

hep-ph2026

Combining Pumping and Absorption Effects in Neutrino Oscillation Probabilities: A Non-Hermitian Framework

Gabriela Barenboim, Alberto Gago, Eduardo Massoni

We study two-flavour neutrino oscillations in which a coherent off-diagonal interaction from a complex background field coexists with an absorptive channel acting on a single mass…

hep-ph2026

Three-loop QCD corrections to heavy-to-light form factors and applications to inclusive $B$ decays

Matteo Fael, Tobias Huber, Fabian Lange +3

We report on the calculation of heavy-to-light form factors at $O (α_{s}^{3})$ and on selected phenomenological applications in inclusive $B$ -decays. After outlining the loop…

hep-ph2026★ 1 cited

Muon lifetime and Fermi constant: an update

Alexander Eberhart, Matteo Fael, Alexander Keshavarzi +5

We present an updated prediction for the lifetime of the muon including a detailed analysis of all relevant uncertainties. Our prediction includes QED corrections up to order $α^{3}$ …

hep-ph2026

The photon-energy spectrum in $B \to X_{s} γ$ to N $^{3}$ LO: light-fermion and large- $N_{c}$ corrections

Matteo Fael, Fabian Lange, Kay Schönwald +1

We calculate the photon-energy spectrum of the inclusive radiative decay $B \to X_{s} γ$ , induced by the electromagnetic dipole operator $O_{7}$ , to next-to-next-to-next-to-leading order…

hep-ph2026

$g g \to Z H$ at NLO matched to parton showers with ggxy and POWHEG

Joshua Davies, Kay Schönwald, Matthias Steinhauser +1

We implement the recently-calculated analytic expressions for the next-to-leading order QCD corrections to $g g \to Z H$ in ggxy. This provides a flexible framework for investigating…

hep-ph2026

Analytic next-to-leading order electroweak corrections to Higgs boson pair production at high energies

Joshua Davies, Kay Schönwald, Matthias Steinhauser +1

We compute the complete top-quark-induced next-to-leading order electroweak corrections to the form factors entering gluon-induced Higgs boson pair production. We consider the top…

hep-ph2025★ 1 cited

Three-loop corrections to $g g \to Z H$ in the large top quark mass limit

Joshua Davies, Dominik Grau, Kay Schönwald +2

We compute three-loop virtual corrections to the associated production of a Higgs boson with a $Z$ boson in the large- $m_{t}$ limit. We describe in detail the application of the asym…

hep-ph2025★ 1 cited

Two-loop QCD corrections to $Z H$ and off-shell $Z$ boson pair production in gluon fusion

Joshua Davies, Dominik Grau, Kay Schönwald +3

We compute two-loop corrections to the associated production of a Higgs boson with a $Z$ boson and to off-shell $Z$ boson pair production in the gluon fusion channel, mediated by a…

hep-ph2025★ 4 cited

$g g \to Z H$ : updated predictions at NLO QCD

Benjamin Campillo Aveleira, Long Chen, Joshua Davies +9

We present state-of-the-art predictions for the inclusive cross section of gluon-initiated $Z H$ production, following the recommendations of the LHC Higgs Working Group. In particu…

hep-ph2025★ 1 cited

{\tt ggxy}: a flexible library to compute gluon-induced cross sections

Joshua Davies, Kay Schönwald, Matthias Steinhauser +1

We present the library {\tt ggxy}, written in {\tt C++}, which can be used to compute partonic and hadronic cross sections for gluon-induced processes with at least one closed heav…

hep-ph2025★ 1 cited

Three-loop large- $N_{c}$ virtual corrections to $g g \to H H$ in the forward limit

Joshua Davies, Kay Schönwald, Matthias Steinhauser

We compute the three-loop form factors for $g g \to H H$ in the limit of vanishing transverse momentum of the Higgs boson which provides a reasonable approximation of the cross sectio…

hep-ph2025

Analytic next-to-leading order Yukawa and Higgs boson self-coupling corrections to $g g \to H H$ at high energies

Joshua Davies, Kay Schönwald, Matthias Steinhauser +1

We consider electroweak corrections to Higgs boson pair production, taking into account the top quark Yukawa and Higgs boson self couplings. Using differential equations we compute…

hep-ph2024

Total decay rates of $B$ mesons at NNLO-QCD

Manuel Egner, Matteo Fael, Alexander Lenz +4

We update the Standard Model (SM) predictions for the lifetimes of the $B^{+}$ , $B_{d}$ and $B_{s}$ mesons within the heavy quark expansion (HQE), including the recently determined NNLO-…

hep-ph1994★ 15 cited

${\cal O}(α\as \ln m_t^2)$ Non-Universal Corrections to the Decay Rate $Γ (Z \to b b ˉ)$

A. Kwiatkowski, M. Steinhauser

The partial decay rate $Γ (Z \to b b ˉ)$ is significantly influenced by the mass of the top quark due to electroweak radiative corrections. The leading $\sim m_{t}^{2}$ and the next-t…

Combining Pumping and Absorption Effects in Neutrino Oscillation Probabilities: A Non-Hermitian Framework

Three-loop QCD corrections to heavy-to-light form factors and applications to inclusive B decays

Muon lifetime and Fermi constant: an update

The photon-energy spectrum in B→Xs​γ to N3LO: light-fermion and large-Nc​ corrections

gg→ZH at NLO matched to parton showers with ggxy and POWHEG

Analytic next-to-leading order electroweak corrections to Higgs boson pair production at high energies

Three-loop corrections to gg→ZH in the large top quark mass limit

Two-loop QCD corrections to ZH and off-shell Z boson pair production in gluon fusion

gg→ZH : updated predictions at NLO QCD

{\tt ggxy}: a flexible library to compute gluon-induced cross sections

Three-loop large-Nc​ virtual corrections to gg→HH in the forward limit

Analytic next-to-leading order Yukawa and Higgs boson self-coupling corrections to gg→HH at high energies

Total decay rates of B mesons at NNLO-QCD

${\cal O}(α\as \ln m_t^2)$ Non-Universal Corrections to the Decay Rate Γ(Z→bbˉ)

Three-loop QCD corrections to heavy-to-light form factors and applications to inclusive $B$ decays

The photon-energy spectrum in $B \to X_{s} γ$ to N $^{3}$ LO: light-fermion and large- $N_{c}$ corrections

$g g \to Z H$ at NLO matched to parton showers with ggxy and POWHEG

Three-loop corrections to $g g \to Z H$ in the large top quark mass limit

Two-loop QCD corrections to $Z H$ and off-shell $Z$ boson pair production in gluon fusion

$g g \to Z H$ : updated predictions at NLO QCD

Three-loop large- $N_{c}$ virtual corrections to $g g \to H H$ in the forward limit

Analytic next-to-leading order Yukawa and Higgs boson self-coupling corrections to $g g \to H H$ at high energies

Total decay rates of $B$ mesons at NNLO-QCD

${\cal O}(α\as \ln m_t^2)$ Non-Universal Corrections to the Decay Rate $Γ (Z \to b b ˉ)$