M. Steinhauser

activity

19942026

most citedEstimate of BR(B -> X_s gamma) at O(alpha_s^2)

651 citations · 15.8k across the 213 of their papers we have counts for

collaborators

Showing hep-phShow all

212 papers · 1 filter

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-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★ 2 cited

Towards $g g \to H H$ at next-to-next-to-leading order: light-fermionic three-loop corrections

Joshua Davies, Kay Schönwald, Matthias Steinhauser

We consider light-fermion three-loop corrections to $g g \to H H$ using forward scattering kinematics in the limit of a vanishing Higgs boson mass, which covers a large part of the ph…

hep-ph2023★ 25 cited

Analytic approximations of $2 \to 2$ processes with massive internal particles

Joshua Davies, Go Mishima, Kay Schönwald +1

We consider two-loop corrections to $2 \to 2$ scattering processes with massive particles in the final state and massive particles in the loop. We discuss the combination of analyti…

hep-ph2023★ 24 cited

Massive three-loop form factors: anomaly contribution

Matteo Fael, Fabian Lange, Kay Schönwald +1

We compute three-loop corrections to the singlet form factors for massive quarks using a semi-analytic method which provides precise results over the whole kinematic range. Particu…

hep-ph2022★ 41 cited

Higgs boson contribution to the leading two-loop Yukawa corrections to $g g \to H H$

Joshua Davies, Go Mishima, Kay Schönwald +2

We analytically compute two-loop Yukawa corrections to Higgs boson pair production in the high-energy limit. Such corrections are generated by an exchange of a Higgs boson between…

hep-ph2022★ 1 cited

Singlet and non-singlet three-loop massive form factors

Matteo Fael, Fabian Lange, Kay Schönwald +1

We consider Quantum Chromodynamics with external vector, axial-vector, scalar and pseudo-scalar currents and compute three-loop corrections to the corresponding vertex function tak…

hep-ph2022★ 17 cited

The width difference in the $B - B ˉ$ system at next-to-next-to-leading order of QCD

Marvin Gerlach, Ulrich Nierste, Vladyslav Shtabovenko +1

We extend the theoretical prediction for the width difference $Δ Γ_{q}$ in the mixing of neutral $B$ mesons in the Standard Model to next-to-next-to-leading order in $α_{s}$ . To this ai…

hep-ph2022

A first glance to the kinematic moments of $B \to X_{c} ℓ ν$ at third order

Matteo Fael, Kay Schönwald, Matthias Steinhauser

We study the impact of third-order QCD corrections for several kinematic moments of the inclusive semileptonic $B$ decays, to first order in the $1/ m_{b}$ expansion. We consider the…

hep-ph2022★ 28 cited

ZH production in gluon fusion at NLO in QCD

Long Chen, Joshua Davies, Gudrun Heinrich +5

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 n…

hep-ph2022★ 1 cited

The $H b b ˉ$ vertex at four loops and hard matching coefficients in SCET for various currents

Amlan Chakraborty, Tobias Huber, Roman N. Lee +5

We compute the four-loop corrections to the Higgs-bottom vertex within massless QCD and present analytic results for all color structures. The infrared poles of the renormalized fo…

hep-ph2022★ 8 cited

Three-loop non-singlet matching coefficients for heavy quark currents

Manuel Egner, Matteo Fael, Fabian Lange +2

We compute the matching coefficients between QCD and non-relativistic QCD for external vector, axial-vector, scalar and pseudo-scalar currents up to three-loop order. We concentrat…

hep-ph2022

The width difference in \bbm\ at order $α_{s}$ and beyond

Marvin Gerlach, Ulrich Nierste, Vladyslav Shtabovenko +1

We complete the calculation of the element $Γ_{12}^{q}$ of the decay matrix in $B_{q} - B ˉ_{q}$ mixing, $q = d, s$ , to order $α_{s}$ in the leading power of the Heavy Quark Expansion. To t…

hep-ph2022★ 55 cited

Massive vector form factors to three loops

Matteo Fael, Fabian Lange, Kay Schoenwald +1

We compute the three-loop non-singlet corrections to the photon-quark form factors taking into account the full dependence on the virtuality of the photon and the quark mass. We co…

hep-ph2022★ 52 cited

Quark and gluon form factors in four-loop QCD

Roman N. Lee, Andreas von Manteuffel, Robert M. Schabinger +3

We compute the photon-quark and Higgs-gluon form factors to four-loop order within massless perturbative Quantum Chromodynamics. Our results constitute ready-to-use building blocks…

hep-ph2021

A semi-numerical method for one-scale problems applied to the $MS$ -on-shell relation

Matteo Fael, Fabian Lange, Kay Schönwald +1

We discuss a practical approach to compute master integrals entering physical quantities which depend on one parameter. As an example we consider four-loop QCD corrections to the r…

hep-ph2021★ 20 cited

Real corrections to Higgs boson pair production at NNLO in the large top quark mass limit

Joshua Davies, Florian Herren, Go Mishima +1

In this paper we consider the next-to-next-to-leading order total cross section of Higgs boson pair production in the large top quark mass limit and compute four expansion terms in…

hep-ph2021★ 16 cited

Two-loop QCD penguin contribution to the width difference in $B_{s} - B ˉ_{s}$ mixing

Marvin Gerlach, Ulrich Nierste, Vladyslav Shtabovenko +1

We consider two-loop QCD corrections to the element $Γ_{12}^{q}$ of the decay matrix in $B_{q} - B ˉ_{q}$ mixing, $q = d, s$ , in the leading power of the Heavy Quark Expansion. The calcul…

hep-ph2021★ 35 cited

A semi-analytic method to compute Feynman integrals applied to four-loop corrections to the $MS$ -pole quark mass relation

Matteo Fael, Fabian Lange, Kay Schönwald +1

We describe a method to numerically compute multi-loop integrals, depending on one dimensionless parameter $x$ and the dimension $d$ , in the whole kinematic range of $x$ . The metho…

hep-ph2021★ 6 cited

Charm-quark mass effects in NRQCD matching coefficients and the leptonic decay of the $Υ (1 S)$ meson

Manuel Egner, Matteo Fael, Jan Piclum +2

We compute two-loop corrections to the vector current matching coefficient involving two heavy quark masses. The result is applied to the computation of the $Υ (1 S)$ decay width int…

hep-ph2020★ 29 cited

Virtual corrections to $g g \to Z H$ in the high-energy and large- $m_{t}$ limits

Joshua Davies, Go Mishima, Matthias Steinhauser

We compute the next-to-leading order virtual corrections to the partonic cross-section of the process $g g \to Z H$ , in the high-energy and large- $m_{t}$ limits. We use Padé approximant…

hep-ph2020★ 65 cited

Third order corrections to the semi-leptonic \boldmath{ $b \to c$ } and the muon decays

Matteo Fael, Kay Schönwald, Matthias Steinhauser

We compute corrections of order $α_{s}^{3}$ to the decay $b \to c ℓ ν ˉ$ taking into account massive charm quarks. In the on-shell scheme large three-loop corrections are found. H…

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

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

Towards gg→HH at next-to-next-to-leading order: light-fermionic three-loop corrections

Analytic approximations of 2→2 processes with massive internal particles

Massive three-loop form factors: anomaly contribution

Higgs boson contribution to the leading two-loop Yukawa corrections to gg→HH

Singlet and non-singlet three-loop massive form factors

The width difference in the B−Bˉ system at next-to-next-to-leading order of QCD

A first glance to the kinematic moments of B→Xc​ℓν at third order

ZH production in gluon fusion at NLO in QCD

The Hbbˉ vertex at four loops and hard matching coefficients in SCET for various currents

Three-loop non-singlet matching coefficients for heavy quark currents

The width difference in \bbm\ at order αs​ and beyond

Massive vector form factors to three loops

Quark and gluon form factors in four-loop QCD

A semi-numerical method for one-scale problems applied to the MS-on-shell relation

Real corrections to Higgs boson pair production at NNLO in the large top quark mass limit

Two-loop QCD penguin contribution to the width difference in Bs​−Bˉs​ mixing

A semi-analytic method to compute Feynman integrals applied to four-loop corrections to the MS-pole quark mass relation

Charm-quark mass effects in NRQCD matching coefficients and the leptonic decay of the Υ(1S) meson

Virtual corrections to gg→ZH in the high-energy and large-mt​ limits

Third order corrections to the semi-leptonic \boldmath{b→c} and the muon decays

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

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

Towards $g g \to H H$ at next-to-next-to-leading order: light-fermionic three-loop corrections

Analytic approximations of $2 \to 2$ processes with massive internal particles

Higgs boson contribution to the leading two-loop Yukawa corrections to $g g \to H H$

The width difference in the $B - B ˉ$ system at next-to-next-to-leading order of QCD

A first glance to the kinematic moments of $B \to X_{c} ℓ ν$ at third order

The $H b b ˉ$ vertex at four loops and hard matching coefficients in SCET for various currents

The width difference in \bbm\ at order $α_{s}$ and beyond

A semi-numerical method for one-scale problems applied to the $MS$ -on-shell relation

Two-loop QCD penguin contribution to the width difference in $B_{s} - B ˉ_{s}$ mixing

A semi-analytic method to compute Feynman integrals applied to four-loop corrections to the $MS$ -pole quark mass relation

Charm-quark mass effects in NRQCD matching coefficients and the leptonic decay of the $Υ (1 S)$ meson

Virtual corrections to $g g \to Z H$ in the high-energy and large- $m_{t}$ limits

Third order corrections to the semi-leptonic \boldmath{ $b \to c$ } and the muon decays