M. Fael

activity

20172026

most citedB physics Beyond the Standard Model at One Loop: Complete Renormalization Group Evolution below the Electroweak Scale

147 citations · 513 across the 26 of their papers we have counts for

collaborators

26 papers

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★ 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-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-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

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-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★ 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★ 7 cited

New physics contributions to moments of inclusive $b \to c$ semileptonic decays

Matteo Fael, Muslem Rahimi, K. Keri Vos

Inclusive semileptonic $B \to X_{c} ℓ ν ˉ_{ℓ}$ decays, where $ℓ = μ, e$ , are by now standard candles in the determination of the CKM element $∣ V_{c b} ∣$ . These determinations r…

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★ 3 cited

First extraction of inclusive $V_{c b}$ from $q^{2}$ moments

Florian Bernlochner, Matteo Fael, Kevin Olschewsky +4

We present the first determination of $V_{c b}$ from inclusive $B \to X_{c} ℓ ν ˉ_{ℓ}$ using moments of the dilepton invariant mass, $q^{2}$ . These moments are reparametrization in…

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★ 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★ 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-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★ 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★ 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…

hep-ph2020★ 37 cited

On the relation between the $MS$ and the kinetic mass of heavy quarks

Matteo Fael, Kay Schönwald, Matthias Steinhauser

We compute the relation between the pole mass and the kinetic mass of a heavy quark to three loops. Using the known relation between the pole and the $MS$ mass we ob…

hep-ph2020★ 28 cited

Exact results for $Z_{m}^{OS}$ and $Z_{2}^{OS}$ with two mass scales and up to three loops

Matteo Fael, Kay Schönwald, Matthias Steinhauser

We consider the on-shell mass and wave function renormalization constants $Z_{m}^{OS}$ and $Z_{2}^{OS}$ up to three-loop order allowing for a second non-zero quark mass. We obt…

hep-ph2019★ 27 cited

$τ \to μμμ$ at a rate of one out of $1 0^{14}$ tau decays?

Patrick Blackstone, Matteo Fael, Emilie Passemar

We present in a full analytic form the partial widths for the lepton flavour violating decays $μ^{\pm} \to e^{\pm} e^{+} e^{-}$ and $τ^{\pm} \to ℓ^{\pm} ℓ^{' +} ℓ^{' -}$ , with $\ell,\el…

hep-ph2018

NLO prediction for the decays $τ \to ℓ ℓ^{'} ℓ^{'} ν ν ˉ$ and $μ \to eee ν ν ˉ$

Matteo Fael

These proceedings review the differential decay rates and the branching ratios of the tau and muon decays $τ \to ℓ ℓ^{'} ℓ^{'} ν ν ˉ$ (with $ℓ, ℓ^{'} = μ, e$ ) and $μ\to e e e ν\b…

hep-ph2018★ 52 cited

Hadronic corrections to $μ$ - $e$ scattering at NNLO with space-like data

Matteo Fael

The Standard Model prediction for $μ$ - $e$ scattering at Next-to-Next-to-Leading Order (NNLO) contains non-perturbative QCD contributions given by diagrams with a hadronic vacuum po…

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

Muon lifetime and Fermi constant: an update

Total decay rates of B mesons at NNLO-QCD

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

Heavy-to-light form factors to three loops

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

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

Massive three-loop form factors: anomaly contribution

New physics contributions to moments of inclusive b→c semileptonic decays

Singlet and non-singlet three-loop massive form factors

First extraction of inclusive Vcb​ from q2 moments

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

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

Massive vector form factors to three loops

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

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

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

On the relation between the MS and the kinetic mass of heavy quarks

Exact results for ZmOS​ and Z2OS​ with two mass scales and up to three loops

τ→μμμ at a rate of one out of 1014 tau decays?

NLO prediction for the decays τ→ℓℓ′ℓ′ννˉ and μ→eeeννˉ

Hadronic corrections to μ-e scattering at NNLO with space-like data

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

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

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

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

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

New physics contributions to moments of inclusive $b \to c$ semileptonic decays

First extraction of inclusive $V_{c b}$ from $q^{2}$ moments

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

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

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

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

On the relation between the $MS$ and the kinetic mass of heavy quarks

Exact results for $Z_{m}^{OS}$ and $Z_{2}^{OS}$ with two mass scales and up to three loops

$τ \to μμμ$ at a rate of one out of $1 0^{14}$ tau decays?

NLO prediction for the decays $τ \to ℓ ℓ^{'} ℓ^{'} ν ν ˉ$ and $μ \to eee ν ν ˉ$

Hadronic corrections to $μ$ - $e$ scattering at NNLO with space-like data