N. Gubernari

activity

20182026

most cited

B \to P

and

B \to V

Form Factors from

B

-Meson Light-Cone Sum Rules beyond Leading Twist

204 citations · 825 across the 21 of their papers we have counts for

collaborators

23 papers

hep-ph2026

The Semileptonic B Frontier: LHC, B-factories, Lattice QCD & the Hunt for Precision

F. De Fazio, P. De Simone, M. Fedele +33

This review document summarizes the main outcomes and key theoretical and experimental developments discussed at the workshop ``The Semileptonic $B$ Frontier: LHC, $B$ -Factories, L…

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-ph2026

Three-particle di-light-cone distribution amplitudes of the $B$ -meson in heavy-quark effective theory

Riccardo Bartocci, Philipp Böer, Thorsten Feldmann +3

We present a systematic study of the three-particle di-light-cone distribution amplitudes (DLCDAs) of the $B$ -meson. They are defined through $B$ -meson--to--vacuum matrix elements…

hep-ph2026

Decay constants of the $B_{c}$ mesons with vector and tensor currents

Eduard Costa i Reina, Nico Gubernari, Zachary Wüthrich

We calculate the decay constants of the lowest-lying $B_{c}$ mesons in the spin-parity channels $J^{P} = 0^{-}, 0^{+}, 1^{-}, 1^{+}$ , commonly referred to as the $B_c,\, B_{c0}^*,\, B_c^*,\…

hep-ph2026

Unitarity bounds and form-factor predictions for $B$ -meson decays

Nico Gubernari

This paper has three main aims. First, I review in a pedagogical way the unitarity bounds for form factors in $B$ -meson decays, together with the parametrisations most commonly use…

hep-ph2025

Correlator with tensor currents and two masses at two loops

Terry Generet, Nico Gubernari, Eetu Loisa

We calculate the vacuum-to-vacuum correlator of two quark tensor currents with two massive quarks, retaining full momentum dependence. For the first time, we include perturbative c…

hep-ph2025

Challenging $B ˉ_{(s)} \to D_{(s)}^{(*)}$ Form Factors with the Heavy Quark Expansion

Marzia Bordone, Nico Gubernari, Martin Jung +1

Recent publications by three lattice QCD collaborations have provided an unprecedented wealth of theoretical predictions for the $B ˉ_{q} \to D_{q}^{(*)}$ form factors, for spectat…

hep-ph2025★ 3 cited

Impact on $L$ -observables of a new combined analysis of $B_{d, s} \to K^{(*)}$ form factors

Aritra Biswas, Nico Gubernari, Joaquim Matias +1

We explore the impact of a combined analysis of $B_{d, s} \to K^{(*)}$ form factors on a set of $L$ -observables. The $L$ -observables are constructed from ratios of branching fraction…

hep-ph2024★ 13 cited

Unitarity bounds with subthreshold and anomalous cuts for $b$ -hadron decays

Abinand Gopal, Nico Gubernari

We derive a generalisation of the Boyd-Grinstein-Lebed (BGL) parametrization. Most form factors (FFs) in $b$ -hadron decays exhibit additional branch cuts -- namely subthreshold and…

hep-ph2024★ 1 cited

Malaphoric $Z^{'}$ models for $b \to s ℓ^{+} ℓ^{-}$ anomalies

Ben Allanach, Nico Gubernari

We study some phenomenological effects of kinetic mixing between the hypercharge field and a new $U (1)$ gauge field in specific $Z^{'}$ models that ameliorate the tensions betwe…

hep-ph2024★ 1 cited

Theoretical predictions for $b \to s μ^{+} μ^{-}$ decays

Nico Gubernari

I review the state of the art of the theoretical calculations for decays mediated by $b \to s ℓ^{+} ℓ^{-}$ transitions, for $ℓ = e, μ$ . I focus on the predictions of observables i…

hep-ph2023

Non-factorisable Contributions of Strong-Penguin Operators in $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ Decays

Thorsten Feldmann, Nico Gubernari

We investigate for the first time a certain class of non-factorisable contributions of the four-quark operators $O_{3 - 6}$ in the weak effective Hamiltonian to the $Λ_b \to Λ…

hep-ph2023★ 11 cited

$B \to D_{0}^{}$ and $B_{s} \to D_{s 0}^{}$ form factors from QCD light-cone sum rules

Nico Gubernari, Alexander Khodjamirian, Rusa Mandal +1

We present the first application of QCD light-cone sum rules (LCSRs) with $B_{(s)}$ -meson distribution amplitudes to the $B_{(s)} \to D_{(s) 0}^{*}$ form factors, where $D_{(s)0}^*…

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-ph2022★ 14 cited

On the contribution of the electromagnetic dipole operator $O_{7}$ to the $B ˉ_{s} \to μ^{+} μ^{-}$ decay amplitude

Thorsten Feldmann, Nico Gubernari, Tobias Huber +1

We construct a factorization theorem that allows to systematically include QCD corrections to the contribution of the electromagnetic dipole operator in the effective weak Hamilton…

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★ 14 cited

$B \to D_{1} (2420)$ and $B \to D_{1}^{'} (2430)$ form factors from QCD light-cone sum rules

Nico Gubernari, Alexander Khodjamirian, Rusa Mandal +1

We perform the first calculation of form factors in the semileptonic decays $B \to D_{1} (2420) ℓ ν_{ℓ}$ and $B \to D_{1}^{'} (2430) ℓ ν_{ℓ}$ using QCD light-cone sum rules (…

hep-ph2021★ 62 cited

EOS -- A Software for Flavor Physics Phenomenology

Danny van Dyk, Frederik Beaujean, Thomas Blake +17

EOS is an open-source software for a variety of computational tasks in flavor physics. Its use cases include theory predictions within and beyond the Standard Model of particle phy…

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-ph2020★ 111 cited

Non-local matrix elements in $B_{(s)} \to {K^{(*)}, ϕ} ℓ^{+} ℓ^{-}$

Nico Gubernari, Danny van Dyk, Javier Virto

We revisit the theoretical predictions and the parametrization of non-local matrix elements in rare $B ˉ_{(s)} \to {K ˉ^{(*)}, ϕ} ℓ^{+} ℓ^{-}$ and $\bar{B}_{(s)}…

hep-ph2020★ 46 cited

A puzzle in $B ˉ_{(s)}^{0} \to D_{(s)}^{(*) +} {π^{-}, K^{-}}$ decays and extraction of the $f_{s} / f_{d}$ fragmentation fraction

Marzia Bordone, Nico Gubernari, Tobias Huber +2

We provide updated predictions for the hadronic decays $B ˉ_{s}^{0} \to D_{s}^{(*) +} π^{-}$ and $B ˉ^{0} \to D^{(*) +} K^{-}$ . They are based on $O (α_{s}^{2})$ results for the QCD f…

hep-ph2019★ 89 cited

Heavy-Quark Expansion for $B ˉ_{s} \to D_{s}^{(*)}$ Form Factors and Unitarity Bounds beyond the $S U (3)_{F}$ Limit

Marzia Bordone, Nico Gubernari, Martin Jung +1

We carry out a comprehensive analysis of the full set of $B ˉ_{q} \to D_{q}^{(*)}$ form factors for spectator quarks $q = u, d, s$ within the framework of the Heavy-Quark Expansion (HQ…

hep-ph2018★ 204 cited

$B \to P$ and $B \to V$ Form Factors from $B$ -Meson Light-Cone Sum Rules beyond Leading Twist

Nico Gubernari, Ahmet Kokulu, Danny van Dyk

We provide results for the full set of form factors describing semileptonic $B$ -meson transitions to pseudoscalar mesons $π$ , $K$ , $D ˉ$ and vector mesons $ρ$ , $K^{*}$ , $\bar{D}^…

The Semileptonic B Frontier: LHC, B-factories, Lattice QCD & the Hunt for Precision

EOS version 1.1: A Software for Flavor Physics Phenomenology

Three-particle di-light-cone distribution amplitudes of the B-meson in heavy-quark effective theory

Decay constants of the Bc​ mesons with vector and tensor currents

Unitarity bounds and form-factor predictions for B-meson decays

Correlator with tensor currents and two masses at two loops

Challenging Bˉ(s)​→D(s)(∗)​ Form Factors with the Heavy Quark Expansion

Impact on L-observables of a new combined analysis of Bd,s​→K(∗) form factors

Unitarity bounds with subthreshold and anomalous cuts for b-hadron decays

Malaphoric Z′ models for b→sℓ+ℓ− anomalies

Theoretical predictions for b→sμ+μ− decays

Non-factorisable Contributions of Strong-Penguin Operators in Λb​→Λℓ+ℓ− Decays

B→D0∗​ and Bs​→Ds0∗​ form factors from QCD light-cone sum rules

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

On the contribution of the electromagnetic dipole operator O7​ to the Bˉs​→μ+μ− decay amplitude

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

B→D1​(2420) and B→D1′​(2430) form factors from QCD light-cone sum rules

EOS -- A Software for Flavor Physics Phenomenology

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

Non-local matrix elements in B(s)​→{K(∗),ϕ}ℓ+ℓ−

A puzzle in Bˉ(s)0​→D(s)(∗)+​{π−,K−} decays and extraction of the fs​/fd​ fragmentation fraction

Heavy-Quark Expansion for Bˉs​→Ds(∗)​ Form Factors and Unitarity Bounds beyond the SU(3)F​ Limit

B→P and B→V Form Factors from B-Meson Light-Cone Sum Rules beyond Leading Twist

Three-particle di-light-cone distribution amplitudes of the $B$ -meson in heavy-quark effective theory

Decay constants of the $B_{c}$ mesons with vector and tensor currents

Unitarity bounds and form-factor predictions for $B$ -meson decays

Challenging $B ˉ_{(s)} \to D_{(s)}^{(*)}$ Form Factors with the Heavy Quark Expansion

Impact on $L$ -observables of a new combined analysis of $B_{d, s} \to K^{(*)}$ form factors

Unitarity bounds with subthreshold and anomalous cuts for $b$ -hadron decays

Malaphoric $Z^{'}$ models for $b \to s ℓ^{+} ℓ^{-}$ anomalies

Theoretical predictions for $b \to s μ^{+} μ^{-}$ decays

Non-factorisable Contributions of Strong-Penguin Operators in $Λ_{b} \to Λ ℓ^{+} ℓ^{-}$ Decays

$B \to D_{0}^{}$ and $B_{s} \to D_{s 0}^{}$ form factors from QCD light-cone sum rules

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

On the contribution of the electromagnetic dipole operator $O_{7}$ to the $B ˉ_{s} \to μ^{+} μ^{-}$ decay amplitude

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

$B \to D_{1} (2420)$ and $B \to D_{1}^{'} (2430)$ form factors from QCD light-cone sum rules

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

Non-local matrix elements in $B_{(s)} \to {K^{(*)}, ϕ} ℓ^{+} ℓ^{-}$

A puzzle in $B ˉ_{(s)}^{0} \to D_{(s)}^{(*) +} {π^{-}, K^{-}}$ decays and extraction of the $f_{s} / f_{d}$ fragmentation fraction

Heavy-Quark Expansion for $B ˉ_{s} \to D_{s}^{(*)}$ Form Factors and Unitarity Bounds beyond the $S U (3)_{F}$ Limit

$B \to P$ and $B \to V$ Form Factors from $B$ -Meson Light-Cone Sum Rules beyond Leading Twist