K. Schönwald

activity

20162026

most citedLeptoquark Flavor Patterns & B Decay Anomalies

160 citations · 794 across the 44 of their papers we have counts for

collaborators

45 papers

hep-ph2026

Heavy-Quark Production in DIS: Mellin Moments for Phenomenology

Marco Klann, Sven-Olaf Moch, Kay Schönwald

Heavy-quark production in deep-inelastic scattering probes the gluon distribution, and the precision of current and future data requires predictions beyond next-to-leading order. W…

hep-ph2026

Higgs Boson Pair Production via Gluon Fusion: Higher-Order Corrections and Theoretical Uncertainties

Ajjath A H, Simone Alioli, Emanuele Bagnaschi +51

In this contribution, the higher-order QCD and electroweak corrections to Standard Model Higgs boson pair production via the gluon-fusion mechanism, $g g \to hh$ , are summarized and…

hep-ph2026

NNLO QCD corrections to the weak radiative $B$ -meson decay with exact dependence on $m_{c}$

M. Czaja, M. Czakon, T. Huber +5

The inclusive weak radiative $B$ -meson decay provides important constraints on many popular extensions of the Standard Model. Some of the numerically relevant Next-to-Next-to-Leadi…

hep-ph2026

The inclusive $B ˉ \to X_{s} γ$ decay rate with higher precision

M. Misiak, H. M. Asatrian, K. Brune +11

We present a new and upgraded analysis of the inclusive weak radiative decay of the $B$ meson in the standard model and beyond. The $O (α_{s})$ perturbative corrections are…

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

The electron parton distribution functions at the NNLO in QED

Stefano Frixione, Kay Schönwald

The electron Parton Distribution Functions (PDFs) are essential components in the calculations of cross sections within a collinear-factorisation framework at lepton colliders. We…

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

Heavy-quark production in deep-inelastic scattering -- Mellin moments of structure functions

Marco Klann, Sven-Olaf Moch, Kay Schönwald

We compute Mellin moments of the heavy-quark structure functions in deep-inelastic scattering at next-to-leading order in quantum chromodynamics, retaining their full dependence on…

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

Polarized Neutral and Charged Current Semi-Inclusive Deep-Inelastic Scattering at NNLO in QCD

Leonardo Bonino, Thomas Gehrmann, Markus Löchner +2

The semi-inclusive production of identified hadrons in deeply inelastic lepton scattering on polarized nucleons allows to probe the spin structure of the nucleon target in a more d…

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

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★ 2 cited

Nonleptonic $B$ -meson decays to next-to-next-to-leading order

Manuel Egner, Matteo Fael, Kay Schönwald +1

We compute next-to-next-to-leading order QCD corrections to the partonic processes $b \to c u ˉ d$ and $b \to c c ˉ s$ , which constitute the dominant decay channels in standa…

hep-ph2024

The three-loop single-mass heavy flavor corrections to deep-inelastic scattering

J. Ablinger, A. Behring, J. Blümlein +4

We report on the status of the calculation of the massive Wilson coefficients and operator matrix elements for deep-inelastic scatterung to three-loop order. We discuss both the un…

hep-ph2024

Heavy-to-light form factors to three loops

Matteo Fael, Tobias Huber, Fabian Lange +3

We compute three-loop corrections of $O (α_{s}^{3})$ to form factors with one massive and one massless quark coupling to an external vector, axialvector, scalar, pseudoscala…

hep-ph2024★ 1 cited

Three-loop corrections to Higgs boson pair production: reducible contribution

Joshua Davies, Kay Schönwald, Matthias Steinhauser +1

We compute three-loop corrections to the process $g g \to H H$ originating from one-particle reducible diagrams. This requires the computation of two-loop corrections to the gluon-glu…

hep-ph2024★ 20 cited

Polarized semi-inclusive deep-inelastic scattering at NNLO in QCD

Leonardo Bonino, Thomas Gehrmann, Markus Löchner +2

Semi-inclusive hadron production in longitudinally polarized deep-inelastic lepton-nucleon scattering is a powerful tool for resolving the quark flavor decomposition of the proton'…

hep-ph2024★ 12 cited

The non-first-order-factorizable contributions to the three-loop single-mass operator matrix elements $A_{Q g}^{(3)}$ and $Δ A_{Q g}^{(3)}$

J. Ablinger, A. Behring, J. Blümlein +4

The non-first-order-factorizable contributions (The terms 'first-order-factorizable contributions' and 'non-first-order-factorizable contributions' have been introduced and discuss…

hep-ph2024★ 1 cited

Analytic auxiliary mass flow to compute master integrals in singular kinematics

Gaia Fontana, Thomas Gehrmann, Kay Schönwald

The computation of master integrals from their differential equations requires boundary values to be supplied by an independent method. These boundary values are often desired at s…

hep-ph2023★ 18 cited

The first-order factorizable contributions to the three-loop massive operator matrix elements $A_{Q g}^{(3)}$ and $Δ A_{Q g}^{(3)}$

J. Ablinger, A. Behring, J. Blümlein +4

The unpolarized and polarized massive operator matrix elements $A_{Q g}^{(3)}$ and $Δ A_{Q g}^{(3)}$ contain first-order factorizable and non-first-order factorizable contributions in…

hep-ph2023★ 1 cited

Three-loop $b \to s γ$ vertex with current-current operators

Matteo Fael, Fabian Lange, Kay Schoenwald +1

We compute three-loop vertex corrections to $b \to s γ$ induced by current-current operators. The results are presented as expansions in $m_{c} / m_{b}$ with numerical coefficients which a…

hep-ph2023★ 1 cited

Revisiting semileptonic $B$ meson decays at next-to-next-to-leading order

Manuel Egner, Matteo Fael, Kay Schönwald +1

We compute next-to-next-to-leading order corrections to the semileptonic decay rate of $B$ mesons for arbitrary values of the final-state quark mass. For the contribution with one…

hep-ph2023★ 37 cited

Next-to-leading order electroweak corrections to $g g \to H H$ and $g g \to g H$ in the large- $m_{t}$ limit

Joshua Davies, Kay Schönwald, Matthias Steinhauser +1

We compute two-loop electroweak corrections to Higgs boson pair and Higgs plus jet production, taking into account all sectors of the Standard Model. All diagrams with virtual top…

hep-ph2023★ 13 cited

The inverse Mellin transform via analytic continuation

A. Behring, J. Blümlein, K. Schönwald

We present a method to calculate the $x$ --space expressions of massless or massive operator matrix elements in QCD and QED containing local composite operator insertions, depending…

Heavy-Quark Production in DIS: Mellin Moments for Phenomenology

Higgs Boson Pair Production via Gluon Fusion: Higher-Order Corrections and Theoretical Uncertainties

NNLO QCD corrections to the weak radiative B-meson decay with exact dependence on mc​

The inclusive Bˉ→Xs​γ decay rate with higher precision

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

The electron parton distribution functions at the NNLO in QED

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

Heavy-quark production in deep-inelastic scattering -- Mellin moments of structure functions

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

Polarized Neutral and Charged Current Semi-Inclusive Deep-Inelastic Scattering at NNLO in QCD

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

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

Nonleptonic B-meson decays to next-to-next-to-leading order

The three-loop single-mass heavy flavor corrections to deep-inelastic scattering

Heavy-to-light form factors to three loops

Three-loop corrections to Higgs boson pair production: reducible contribution

Polarized semi-inclusive deep-inelastic scattering at NNLO in QCD

The non-first-order-factorizable contributions to the three-loop single-mass operator matrix elements AQg(3)​ and ΔAQg(3)​

Analytic auxiliary mass flow to compute master integrals in singular kinematics

The first-order factorizable contributions to the three-loop massive operator matrix elements AQg(3)​ and ΔAQg(3)​

Three-loop b→sγ vertex with current-current operators

Revisiting semileptonic B meson decays at next-to-next-to-leading order

Next-to-leading order electroweak corrections to gg→HH and gg→gH in the large-mt​ limit

The inverse Mellin transform via analytic continuation

NNLO QCD corrections to the weak radiative $B$ -meson decay with exact dependence on $m_{c}$

The inclusive $B ˉ \to X_{s} γ$ decay rate with higher precision

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

$g g \to Z H$ 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

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

Nonleptonic $B$ -meson decays to next-to-next-to-leading order

The non-first-order-factorizable contributions to the three-loop single-mass operator matrix elements $A_{Q g}^{(3)}$ and $Δ A_{Q g}^{(3)}$

The first-order factorizable contributions to the three-loop massive operator matrix elements $A_{Q g}^{(3)}$ and $Δ A_{Q g}^{(3)}$

Three-loop $b \to s γ$ vertex with current-current operators

Revisiting semileptonic $B$ meson decays at next-to-next-to-leading order

Next-to-leading order electroweak corrections to $g g \to H H$ and $g g \to g H$ in the large- $m_{t}$ limit