F. De Fazio

activity

19932026

most cited331 models facing new b -> s mu^+ mu^- data

190 citations · 2.8k across the 76 of their papers we have counts for

collaborators

79 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

Hunting for new physics in $B$ meson $b \to u$ transitions: A fresh look with Belle II data

Pietro Colangelo, Fulvia De Fazio, Maria Letizia Di Cuia +1

We present an analysis of the decays $B^{-} \to ℓ^{-} ν ˉ_{ℓ}$ , $B ˉ^{0} \to π^{+} ℓ^{-} ν ˉ_{ℓ}$ , and $B^{-} \to ρ^{0} ℓ^{-} ν ˉ_{ℓ}$ leveraging the precise measurem…

hep-ph2026

Semileptonic $B_{q}$ decays to heavy tensor mesons

Pietro Colangelo, Fulvia De Fazio, Carlo la Torre +1

The semileptonic decays of $B_{q}$ mesons ( $q = u, d, s$ ) to $J^{P} = 2^{+}$ charmed mesons are investigated. The form factors parametrising the hadronic matrix elements of the weak vector and…

hep-ph2024

Constraining $ν$ SMEFT coefficients: the case of the extra $U (1)^{'}$

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco +1

We study the constraints on low-energy coefficients of the $ν$ SMEFT generalization of the Standard Model effective theory in the simple case of a $U (1)^{'}$ enlargement o…

hep-ph2024

Flavour anomalies, correlations, hadronic uncertainties, and all that

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco +1

We present a short overview of the so-called flavour anomalies, discussing their significance and the connections with QCD issues discussed at the HADRON 2023 conference.

hep-ph2024

New Physics couplings from angular coefficient functions of $B ˉ \to D^{*} (D π) ℓ ν ˉ_{ℓ}$

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco +1

The Belle Collaboration has recently measured the complete set of angular coefficient functions for the exclusive decays $B ˉ \to D^{*} (D π) ℓ ν ˉ_{ℓ}$ , with $ℓ = e, μ$ ,…

hep-ph2023

Novelties from Flavour Physics

Fulvia De Fazio

Our present understanding of elementary particle interactions is the synergic result of developments of theoretical ideas and of experimental advances that lead to the theory known…

hep-ph2023

Dalitz decays $D_{s J}^{()} \to D_{s}^{()} ℓ^{+} ℓ^{-}$

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco +1

The Dalitz decays of the positive parity $D_{s J}^{(*)}$ charmed mesons, $D_{s J}^{(*)} \to D_{s}^{(*)} ℓ^{+} ℓ^{-}$ with $J = 0, 1, 2$ and $ℓ = e, μ$ , are important processes to invest…

hep-ph2023

On the decay mode $Λ_{b} \to X_{s} γ$

P. Colangelo, F. De Fazio, F. Loparco

We study the inclusive $H_{b} \to X_{s} γ$ decay with $H_{b}$ a beauty baryon, in particular $Λ_{b}$ , employing an expansion in the heavy quark mass at $O (m_{b}^{- 3})$ at leading or…

hep-ph2023★ 12 cited

331 Model Predictions for Rare $B$ and $K$ Decays, and $Δ F = 2$ Processes: an Update

Andrzej J. Buras, Fulvia De Fazio

Motivated by the improved results from the HPQCD lattice collaboration on the hadronic matrix elements entering $Δ M_{s, d}$ in $B_{s, d}^{0} - B ˉ_{s, d}^{0}$ mixings and the increase of…

hep-ph2022★ 6 cited

Semileptonic $B_{c}$ decays to $P -$ wave charmonium and the nature of $χ_{c 1} (3872)$

P. Colangelo, F. De Fazio, N. Losacco +2

The hadronic form factors of $B_{c}$ semileptonic decays to the $P -$ wave charmonium 4-plet can be expressed near the zero-recoil point in terms of universal functions, performing a s…

hep-ph2022★ 11 cited

Relations among $B_{c} \to J / ψ, η_{c}$ form factors

P. Colangelo, F. De Fazio, F. Loparco +2

We analyze the form factors parametrizing the $B_{c} \to J / ψ, η_{c}$ matrix elements of the operators in a generalized low-energy $b \to c$ semileptonic Hamiltonian. We consider an exp…

hep-ph2021

Probing New Physics with heavy hadron decays

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco

The increasing number of flavour anomalies calls for the investigation of new processes where tensions similar to the observed ones could emerge. Observables sensitive to physics b…

hep-ph2021★ 1 cited

$c \to uν ν ˉ$ transitions of $B_{c}$ mesons: 331 model facing Standard Model null tests

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco

The Glashow-Iliopoulos-Maiani mechanism is extremely efficient to suppress the flavour-changing neutral current decays of charmed hadrons induced by the $c \to u$ transitions, maki…

hep-ph2020★ 33 cited

Inclusive semileptonic $Λ_{b}$ decays in the Standard Model and beyond

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco

Inclusive semileptonic decays of beauty baryons are studied using the heavy quark expansion to $O (1/ m_{b}^{3})$ , at leading order in $α_{s}$ . The case of a polarized decaying bary…

hep-ph2018★ 3 cited

Scrutinizing $B ˉ \to D^{} (D π) ℓ^{-} ν ˉ_{ℓ}$ and $B ˉ \to D^{} (D γ) ℓ^{-} ν ˉ_{ℓ}$ in search of new physics footprints

Pietro Colangelo, Fulvia De Fazio

Besides being important to determine Standard Model parameters such as the CKM matrix elements $∣ V_{c b} ∣$ and $∣ V_{u b} ∣$ , semileptonic $B$ decays seem also promising to reveal new…

hep-ph2016★ 46 cited

Tension in the inclusive versus exclusive determinations of $∣ V_{c b} ∣$ : a possible role of new physics

Pietro Colangelo, Fulvia De Fazio

We reconsider the possibility that the tension in the $∣ V_{c b} ∣$ determinations from inclusive and exclusive $B$ decay modes is due to a new physics effect. We modify the Standard…

hep-ph2016★ 14 cited

331 Models Facing the Tensions in $Δ F = 2$ Processes with the Impact on $ε^{'} / ε$ , $B_{s} \to μ^{+} μ^{-}$ and $B \to K^{*} μ^{+} μ^{-}$

Andrzej J. Buras, Fulvia De Fazio

Motivated by the recently improved lattice QCD results on the hadronic matrix elements entering $Δ M_{s, d}$ in $B_{s, d}^{0} - B ˉ_{s, d}^{0}$ mixings and the resulting increased tension…

hep-ph2016★ 7 cited

On Exclusive $h \to V ℓ^{+} ℓ^{-}$ Decays

Pietro Colangelo, Fulvia De Fazio, Pietro Santorelli

We study a set of exclusive decay modes of the Standard Model Higgs boson into a vector meson and a dilepton pair: $h \to V ℓ^{+} ℓ^{-}$ , with $V = Υ, J / ψ, ϕ$ , and $ℓ = μ, τ$ , deter…

hep-ph2015★ 54 cited

$ε^{'} / ε$ in 331 Models

Andrzej J. Buras, Fulvia De Fazio

Motivated by the recent findings that the ratio $ε^{'} / ε$ in the Standard Model (SM) appears to be significantly below the data we investigate whether the necessar…

hep-ph2015★ 1 cited

Thermalization of a boost-invariant non-Abelian plasma: Holographic approach with boundary sourcing

Loredana Bellantuono, Pietro Colangelo, Fulvia De Fazio +1

In a holographic approach, the evolution of a 4D strongly coupled non-Abelian plasma towards equilibrium can be studied investigating a 5D gravitational dual. The process driving t…

hep-ph2015

NP models with extended gauge groups and extra dimensions: Impact on flavour observables in RS $_{c}$

Fulvia De Fazio

Deviations with respect to Standard Model predictions have recently shown up in angular distributions of the FCNC induced mode $B^{0} \to K^{* 0} μ^{+} μ^{-}$ . Within New Physics models,…

hep-ph2014

New Physics Scenarios in $b \to c ℓ ν ˉ_{ℓ}$ decays

Fulvia De Fazio

The latest BaBar measurements of the ratios $R (D^{(*)}) = \frac{B ( B \to D ^{(*)} τ ν ˉ _{τ} )}{B ( B \to D ^{(*)} μ ν ˉ _{μ} )}$ deviate from the Stan…

hep-ph2014

Analysis of $ρ$ condensation in a Nambu-Jona-Lasinio model

Marco Frasca

A non-local Nambu-Jona-Lasinio model can be derived from QCD in the low-energy limit. In this way, it is possible to fix all the free parameters of the model with physical ones. We…

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

Hunting for new physics in B meson b→u transitions: A fresh look with Belle II data

Semileptonic Bq​ decays to heavy tensor mesons

Constraining νSMEFT coefficients: the case of the extra U(1)′

Flavour anomalies, correlations, hadronic uncertainties, and all that

New Physics couplings from angular coefficient functions of Bˉ→D∗(Dπ)ℓνˉℓ​

Novelties from Flavour Physics

Dalitz decays DsJ(∗)​→Ds(∗)​ℓ+ℓ−

On the decay mode Λb​→Xs​γ

331 Model Predictions for Rare B and K Decays, and ΔF=2 Processes: an Update

Semileptonic Bc​ decays to P−wave charmonium and the nature of χc1​(3872)

Relations among Bc​→J/ψ,ηc​ form factors

Probing New Physics with heavy hadron decays

c→uννˉ transitions of Bc​ mesons: 331 model facing Standard Model null tests

Inclusive semileptonic Λb​ decays in the Standard Model and beyond

Scrutinizing Bˉ→D∗(Dπ)ℓ−νˉℓ​ and Bˉ→D∗(Dγ)ℓ−νˉℓ​ in search of new physics footprints

Tension in the inclusive versus exclusive determinations of ∣Vcb​∣: a possible role of new physics

331 Models Facing the Tensions in ΔF=2 Processes with the Impact on ε′/ε, Bs​→μ+μ− and B→K∗μ+μ−

On Exclusive h→Vℓ+ℓ− Decays

ε′/ε in 331 Models

Thermalization of a boost-invariant non-Abelian plasma: Holographic approach with boundary sourcing

NP models with extended gauge groups and extra dimensions: Impact on flavour observables in RSc​

New Physics Scenarios in b→cℓνˉℓ​ decays

Analysis of ρ condensation in a Nambu-Jona-Lasinio model

Hunting for new physics in $B$ meson $b \to u$ transitions: A fresh look with Belle II data

Semileptonic $B_{q}$ decays to heavy tensor mesons

Constraining $ν$ SMEFT coefficients: the case of the extra $U (1)^{'}$

New Physics couplings from angular coefficient functions of $B ˉ \to D^{*} (D π) ℓ ν ˉ_{ℓ}$

Dalitz decays $D_{s J}^{()} \to D_{s}^{()} ℓ^{+} ℓ^{-}$

On the decay mode $Λ_{b} \to X_{s} γ$

331 Model Predictions for Rare $B$ and $K$ Decays, and $Δ F = 2$ Processes: an Update

Semileptonic $B_{c}$ decays to $P -$ wave charmonium and the nature of $χ_{c 1} (3872)$

Relations among $B_{c} \to J / ψ, η_{c}$ form factors

$c \to uν ν ˉ$ transitions of $B_{c}$ mesons: 331 model facing Standard Model null tests

Inclusive semileptonic $Λ_{b}$ decays in the Standard Model and beyond

Scrutinizing $B ˉ \to D^{} (D π) ℓ^{-} ν ˉ_{ℓ}$ and $B ˉ \to D^{} (D γ) ℓ^{-} ν ˉ_{ℓ}$ in search of new physics footprints

Tension in the inclusive versus exclusive determinations of $∣ V_{c b} ∣$ : a possible role of new physics

331 Models Facing the Tensions in $Δ F = 2$ Processes with the Impact on $ε^{'} / ε$ , $B_{s} \to μ^{+} μ^{-}$ and $B \to K^{*} μ^{+} μ^{-}$

On Exclusive $h \to V ℓ^{+} ℓ^{-}$ Decays

$ε^{'} / ε$ in 331 Models

NP models with extended gauge groups and extra dimensions: Impact on flavour observables in RS $_{c}$

New Physics Scenarios in $b \to c ℓ ν ˉ_{ℓ}$ decays

Analysis of $ρ$ condensation in a Nambu-Jona-Lasinio model