D. van Dyk

activity

20092026

most citedComprehensive Bayesian Analysis of Rare (Semi)leptonic and Radiative B Decays

202 citations · 1.9k across the 37 of their papers we have counts for

collaborators

38 papers

hep-ph2026

EOS version 1.1: A Software for Flavor Physics Phenomenology

Nienke C. Balz, Carolina Bolognani, Marta Burgos Marcos +18

EOS is an open-source software package for a variety of computational tasks in flavor physics. In this article, we describe new developments for version 1.1 of this software and di…

hep-ph2025★ 1 cited

Communicating Likelihoods with Normalising Flows

Jack Y. Araz, Anja Beck, Méril Reboud +2

We present a machine-learning-based workflow to model an unbinned likelihood from its samples. A key advancement over existing approaches is the validation of the learned likelihoo…

hep-ph2024★ 9 cited

Constraining $∣ V_{cs} ∣$ and physics beyond the Standard Model from exclusive (semi)leptonic charm decays

Carolina Bolognani, Méril Reboud, Danny van Dyk +1

We study the available data on exclusive leptonic and semileptonic $c \to s ℓ^{+} ν$ decays within the Standard Model and beyond. Our analysis accounts for theory correlations betwee…

hep-ph2024★ 9 cited

Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results

Lorenz Gärtner, Nikolai Hartmann, Lukas Heinrich +5

Experimental High Energy Physics has entered an era of precision measurements. However, measurements of many of the accessible processes assume that the final states' underlying ki…

hep-ph2023

Analysis of the $ψ (3770)$ resonance in line with unitarity and analyticity constraints

Christoph Hanhart, Stephan Kürten, Méril Reboud +1

We study the inclusive and exclusive cross sections of $e^{+} e^{-} \to hadrons$ for center-of-mass energies between 3.70 GeV and 3.83 GeV to infer the mass, width, and couplings…

hep-ph2023★ 4 cited

Maximising the physics potential of $B^{\pm} \to π^{\pm} μ^{+} μ^{-}$ decays

Alexander Mclean Marshall, Michael Andrew McCann, Mitesh Patel +3

We present a method that maximises the experimental sensitivity to new physics contributions in $B^{\pm} \to π^{\pm} μ^{+} μ^{-}$ decays. This method relies on performing an unbinned maximum l…

hep-ph2023

Testable Likelihoods for Beyond-the-Standard Model Fits

Anja Beck, Méril Reboud, Danny van Dyk

Studying potential BSM effects at the precision frontier requires accurate transfer of information from low-energy measurements to high-energy BSM models. We propose to use normali…

hep-ph2023

New determination of $∣ V_{u b} / V_{c b} ∣$ from $B_{s}^{0} \to {K^{-}, D_{s}^{-}} μ^{+} ν$

Carolina Bolognani, Danny van Dyk, K. Keri Vos

We update the full set of $B ˉ_{s} \to K$ form factors using light-cone sum rules with an on-shell kaon. Our approach determines the relevant sum rule parameters -- the du…

hep-ph2023★ 62 cited

Dispersive Analysis of $B \to K^{(*)}$ and $B_{s} \to ϕ$ Form Factors

Nico Gubernari, Méril Reboud, Danny van Dyk +1

We perform the first simultaneous dispersive analysis of the $B \to K$ , $B \to K^{*}$ , and $B_{s} \to ϕ$ form factors. By means of an improved parametrization, we take into account the fo…

hep-ph2023★ 14 cited

Toward a complete description of $b \to u ℓ^{-} ν ˉ$ decays within the Weak Effective Theory

Domagoj Leljak, Blaženka Melić, Filip Novak +2

We fit the available data on exclusive semileptonic $b \to u ℓ^{-} ν ˉ$ decays within the Standard Model and in the Weak Effective Theory. Assuming Standard Model dynamics, we find…

hep-ph2022★ 33 cited

Resolving the Flavor Structure in the MFV-SMEFT

Sebastian Bruggisser, Danny van Dyk, Susanne Westhoff

We constrain the flavor structure of Wilson coefficients in the Standard Model Effective Field Theory (SMEFT) from data. In the SMEFT, new physics effects in couplings of up-type a…

hep-ph2022★ 7 cited

Dispersion relations for $B^{-} \to ℓ^{-} ν ˉ_{ℓ} ℓ^{' -} ℓ^{' +}$ form factors

Stephan Kürten, Marvin Zanke, Bastian Kubis +1

Using dispersive methods, we study the $B \to γ^{*}$ form factors underlying the decay $B^{-} \to ℓ^{-} ν ˉ_{ℓ} ℓ^{' -} ℓ^{' +}$ . We discuss the ambiguity that arises…

hep-ph2022★ 132 cited

Improved Theory Predictions and Global Analysis of Exclusive $b \to s μ^{+} μ^{-}$ Processes

Nico Gubernari, Méril Reboud, Danny van Dyk +1

We provide improved Standard Model theory predictions for the exclusive rare semimuonic processes $B \to K^{(*)} μ^{+} μ^{-}$ and $B_{s} \to ϕ μ^{+} μ^{-}$ . Our results are based on a novel paramet…

hep-ph2022★ 21 cited

Dispersive bounds for local form factors in $Λ_{b} \to Λ$ transitions

Thomas Blake, Stefan Meinel, Muslem Rahimi +1

We investigate the ten independent local form-factors relevant to the $b$ -baryon decay $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ , combining information of lattice QCD and dispersive bounds. We propo…

hep-ph2022★ 18 cited

Systematic Parametrization of the Leading $B$ -meson Light-Cone Distribution Amplitude

Thorsten Feldmann, Philip Lüghausen, Danny van Dyk

We propose a parametrization of the leading $B$ -meson light-cone distribution amplitude (LCDA) in heavy-quark effective theory (HQET). In position space, it uses a conformal transf…

hep-ph2021★ 62 cited

Lepton-flavour non-universality of $B ˉ \to D^{*} ℓ ν ˉ$ angular distributions in and beyond the Standard Model

Christoph Bobeth, Marzia Bordone, Nico Gubernari +2

We analyze in detail the angular distributions in $B ˉ \to D^{*} ℓ ν ˉ$ decays, with a focus on lepton-flavour non-universality. We investigate the minimal number of angular o…

hep-ph2019★ 33 cited

Angular Analysis of \boldmath $Λ_{b} \to Λ_{c} (\to Λ π) ℓ ν ˉ$

Philipp Böer, Ahmet Kokulu, Jan-Niklas Toelstede +1

We revisit the decay $Λ_{b}^{0} \to Λ_{c}^{+} ℓ^{-} ν ˉ$ ( $ℓ = e, μ, τ$ ) with a subsequent two-body decay $Λ_{c}^{+} \to Λ^{0} π^{+}$ in the Standard Model and in generic New Physics models. The…

hep-ph2018★ 23 cited

Testing lepton flavour universality in semileptonic $Λ_{b} \to Λ_{c}^{*}$ decays

Philipp Böer, Marzia Bordone, Elena Graverini +3

Lepton Flavour Universality tests with semileptonic $Λ_{b} \to Λ_{c}^{*}$ decays are important to corroborate the present anomalies in the similar ratios $R_{D^{(*)}}$ , and can provide com…

hep-ph2017★ 142 cited

WCxf: an exchange format for Wilson coefficients beyond the Standard Model

Jason Aebischer, Ilaria Brivio, Alejandro Celis +11

We define a data exchange format for numerical values of Wilson coefficients of local operators parameterising low-energy effects of physics beyond the Standard Model. The format f…

hep-ph2017★ 151 cited

Long-distance effects in $B \to K^{*} ℓℓ$ from Analyticity

Christoph Bobeth, Marcin Chrzaszcz, Danny van Dyk +1

We discuss a novel approach to systematically determine the long-distance contribution to $B \to K^{*} ℓℓ$ decays in the kinematic region where the dilepton invariant mass is bel…

hep-ph2016★ 49 cited

Measuring the Breaking of Lepton Flavour Universality in $B \to K^{*} ℓ^{+} ℓ^{-}$

Nicola Serra, Rafael Silva Coutinho, Danny van Dyk

We propose measurements of weighted differences of the angular observables in the rare decays $B \to K^{*} ℓ^{+} ℓ^{-}$ . The proposed observables are very sensitive to the difference…

hep-ph2016★ 30 cited

QCD Factorization for $B \to π π ℓ ν$ Decays at Large Dipion Masses

Philipp Böer, Thorsten Feldmann, Danny van Dyk

We introduce a factorization formula for semi-leptonic $b \to u$ transitions in the exclusive decay mode $B^{-} \to π^{+} π^{-} ℓ^{-} ν ˉ_{ℓ}$ in the limit of large pion energies and la…

hep-ph2016★ 34 cited

Using $Λ_{b} \to Λ μ^{+} μ^{-}$ data within a Bayesian analysis of $∣Δ B ∣ = ∣Δ S ∣ = 1$ decays

Stefan Meinel, Danny van Dyk

We study the impact of including the baryonic decay $Λ_{b} \to Λ (\to p π^{-}) μ^{+} μ^{-}$ in a Bayesian analysis of $∣Δ B ∣ = ∣Δ S ∣ = 1$ transitions. We perform fits of the Wilson coefficients…

hep-ph2016★ 20 cited

Impact of leptonic $τ$ decays on the distribution of $B \to P μ ν ˉ$ decays

Marzia Bordone, Gino Isidori, Danny van Dyk

We calculate the fully-differential rate of the decays $B \to P τ (\to μ ν ˉ ν) ν ˉ$ where $P = D, π$ , which is a background to the semimuonic decays $B \to P μ ν ˉ$ . The decays with a…

EOS version 1.1: A Software for Flavor Physics Phenomenology

Communicating Likelihoods with Normalising Flows

Constraining ∣Vcs​∣ and physics beyond the Standard Model from exclusive (semi)leptonic charm decays

Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results

Analysis of the ψ(3770) resonance in line with unitarity and analyticity constraints

Maximising the physics potential of B±→π±μ+μ− decays

Testable Likelihoods for Beyond-the-Standard Model Fits

New determination of ∣Vub​/Vcb​∣ from Bs0​→{K−,Ds−​}μ+ν

Dispersive Analysis of B→K(∗) and Bs​→ϕ Form Factors

Toward a complete description of b→uℓ−νˉ decays within the Weak Effective Theory

Resolving the Flavor Structure in the MFV-SMEFT

Dispersion relations for B−→ℓ−νˉℓ​ℓ′−ℓ′+ form factors

Improved Theory Predictions and Global Analysis of Exclusive b→sμ+μ− Processes

Dispersive bounds for local form factors in Λb​→Λ transitions

Systematic Parametrization of the Leading B-meson Light-Cone Distribution Amplitude

Lepton-flavour non-universality of Bˉ→D∗ℓνˉ angular distributions in and beyond the Standard Model

Angular Analysis of \boldmath Λb​→Λc​(→Λπ)ℓνˉ

Testing lepton flavour universality in semileptonic Λb​→Λc∗​ decays

WCxf: an exchange format for Wilson coefficients beyond the Standard Model

Long-distance effects in B→K∗ℓℓ from Analyticity

Measuring the Breaking of Lepton Flavour Universality in B→K∗ℓ+ℓ−

QCD Factorization for B→ππℓν Decays at Large Dipion Masses

Using Λb​→Λμ+μ− data within a Bayesian analysis of ∣ΔB∣=∣ΔS∣=1 decays

Impact of leptonic τ decays on the distribution of B→Pμνˉ decays

Constraining $∣ V_{cs} ∣$ and physics beyond the Standard Model from exclusive (semi)leptonic charm decays

Analysis of the $ψ (3770)$ resonance in line with unitarity and analyticity constraints

Maximising the physics potential of $B^{\pm} \to π^{\pm} μ^{+} μ^{-}$ decays

New determination of $∣ V_{u b} / V_{c b} ∣$ from $B_{s}^{0} \to {K^{-}, D_{s}^{-}} μ^{+} ν$

Dispersive Analysis of $B \to K^{(*)}$ and $B_{s} \to ϕ$ Form Factors

Toward a complete description of $b \to u ℓ^{-} ν ˉ$ decays within the Weak Effective Theory

Dispersion relations for $B^{-} \to ℓ^{-} ν ˉ_{ℓ} ℓ^{' -} ℓ^{' +}$ form factors

Improved Theory Predictions and Global Analysis of Exclusive $b \to s μ^{+} μ^{-}$ Processes

Dispersive bounds for local form factors in $Λ_{b} \to Λ$ transitions

Systematic Parametrization of the Leading $B$ -meson Light-Cone Distribution Amplitude

Lepton-flavour non-universality of $B ˉ \to D^{*} ℓ ν ˉ$ angular distributions in and beyond the Standard Model

Angular Analysis of \boldmath $Λ_{b} \to Λ_{c} (\to Λ π) ℓ ν ˉ$

Testing lepton flavour universality in semileptonic $Λ_{b} \to Λ_{c}^{*}$ decays

Long-distance effects in $B \to K^{*} ℓℓ$ from Analyticity

Measuring the Breaking of Lepton Flavour Universality in $B \to K^{*} ℓ^{+} ℓ^{-}$

QCD Factorization for $B \to π π ℓ ν$ Decays at Large Dipion Masses

Using $Λ_{b} \to Λ μ^{+} μ^{-}$ data within a Bayesian analysis of $∣Δ B ∣ = ∣Δ S ∣ = 1$ decays

Impact of leptonic $τ$ decays on the distribution of $B \to P μ ν ˉ$ decays