P. Colangelo

activity

19932023

most citedLight scalar mesons in the soft-wall model of AdS/QCD

210 citations · 3.5k across the 95 of their papers we have counts for

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93 papers · 1 filter

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★ 7 cited

$π^{0}, η, η^{'}$ two-photon transition form factors in the holographic soft-wall model and contributions to $(g - 2)_{μ}$

Pietro Colangelo, Floriana Giannuzzi, Stefano Nicotri

We compute the two-photon transition form factors of the light pseudoscalar $π^{0}$ , $η$ and $η^{'}$ mesons in a soft-wall holographic model of QCD with a solution of the $U (1)_{A}$ …

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

The charm of 331

Andrzej J. Buras, Pietro Colangelo, Fulvia De Fazio +1

We perform a detailed analysis of flavour changing neutral current processes in the charm sector in the context of 331 models. As pointed out recently, in the case of $Z^{'}$ co…

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-ph2021★ 18 cited

Role of $B_{c}^{+} \to B_{s, d}^{(*)} ℓ ˉ ν_{ℓ}$ in the Standard Model and in the search for BSM signals

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

The decays $B_{c}^{+} \to B_{a} ℓ ˉ ν_{ℓ}$ and $B_{c}^{+} \to B_{a}^{*} (\to B_{a} γ) ℓ ˉ ν_{ℓ}$ , with $a = s, d$ and $ℓ = e, μ$ , are studied in the Standard Model (SM) and in the…

hep-ph2020★ 23 cited

Chaos in a $Q Q ˉ$ system at finite temperature and baryon density

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

Onset of chaos for the holographic dual of a $Q Q ˉ$ system at finite temperature and baryon density is studied. We consider a string in the $A d S$ Reissner-Nordstrom background…

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-ph2019★ 31 cited

Probing New Physics with $B ˉ \to ρ (770) ℓ^{-} ν ˉ_{ℓ}$ and $B ˉ \to a_{1} (1260) ℓ^{-} ν ˉ_{ℓ}$

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

The $B$ meson semileptonic modes to $ρ (770)$ and $a_{1} (1260)$ are useful to pin down possible non Standard Model effects. The 4d differential $B ˉ \to ρ (π π) ℓ^{-} ν ˉ_{ℓ}$ …

hep-ph2018★ 39 cited

Configurational Entropy can disentangle conventional hadrons from exotica

P. Colangelo, F. Loparco

We evaluate the Configurational Entropy (CE) for scalar mesons and for $J^{P} = \frac{1}{2}^{+}$ baryons in a holographic approach, varying the dimension of boundary theory operators and…

hep-ph2018★ 17 cited

Excited heavy meson decays to light vector mesons: implications for spectroscopy

S. Campanella, P. Colangelo, F. De Fazio

We analyze strong decays of excited charmed and beauty mesons into a light vector meson, exploiting the effective field theory based on heavy quark (HQ) symmetries for heavy mesons…

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-ph2017

Investigating thermalization of a strongly interacting non-Abelian plasma

L. Bellantuono, P. Colangelo, F. De Fazio +2

Using gauge/gravity duality methods, we study the relaxation towards equilibrium of strongly interacting non-Abelian matter. We adopt boundary sourcing to drive the system out-of-e…

hep-ph2017★ 18 cited

Quarkonium dissociation in a far-from-equilibrium holographic setup

L. Bellantuono, P. Colangelo, F. De Fazio +2

The real-time dissociation of the heavy quarkonium in a strongly coupled boost-invariant non-Abelian plasma relaxing towards equilibrium is analyzed in a holographic framework. The…

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★ 11 cited

Role of nonlocal probes of thermalization for a strongly interacting non-Abelian plasma

Loredana Bellantuono, Pietro Colangelo, Fulvia De Fazio +2

We use a holographic method to investigate thermalization of a boost-invariant strongly interacting non-Abelian plasma. Boundary sourcing, a distorsion of the boundary metric, is e…

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★ 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★ 3 cited

Holographic Oddballs

L. Bellantuono, P. Colangelo, F. Giannuzzi

The spectrum of the glueball with $J^{P C} = 0^{--}$ is computed using different bottom-up holographic models of QCD. The results indicate a lowest-lying state lighter than in the det…

hep-ph2015★ 1 cited

On thermalization of a boost-invariant non Abelian plasma

L. Bellantuono, P. Colangelo, F. De Fazio +1

Using a holographic method, we further investigate the relaxation towards the hydrodynamic regime of a boost-invariant non-Abelian plasma taken out-of-equilibrium. In the dual desc…

hep-ph2014

Exclusive $b \to s ν ν ˉ$ induced transitions in RS $_{c}$ model

Pietro Biancofiore, Pietro Colangelo, Fulvia De Fazio +1

We study a set of exclusive $B$ and $B_{s}$ decay modes induced by the rare $b \to s ν ν ˉ$ transition in the RS $_{c}$ model, an extra-dimensional extension of the standard model wit…

hep-ph2014★ 19 cited

Rare semileptonic $B \to K^{*} ℓ^{+} ℓ^{-}$ decays in RS $_{c}$ model

Pietro Biancofiore, Pietro Colangelo, Fulvia De Fazio

Recent LHCb measurements show small discrepancies with respect to the Standard Model (SM) predictions in selected angular distributions of the mode $B^{0} \to K^{* 0} μ^{+} μ^{-}$ . The po…

On the decay mode Λb​→Xs​γ

π0,η,η′ two-photon transition form factors in the holographic soft-wall model and contributions to (g−2)μ​

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

The charm of 331

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

Role of Bc+​→Bs,d(∗)​ℓˉνℓ​ in the Standard Model and in the search for BSM signals

Chaos in a QQˉ​ system at finite temperature and baryon density

Inclusive semileptonic Λb​ decays in the Standard Model and beyond

Probing New Physics with Bˉ→ρ(770)ℓ−νˉℓ​ and Bˉ→a1​(1260)ℓ−νˉℓ​

Configurational Entropy can disentangle conventional hadrons from exotica

Excited heavy meson decays to light vector mesons: implications for spectroscopy

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

Investigating thermalization of a strongly interacting non-Abelian plasma

Quarkonium dissociation in a far-from-equilibrium holographic setup

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

Role of nonlocal probes of thermalization for a strongly interacting non-Abelian plasma

On Exclusive h→Vℓ+ℓ− Decays

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

Holographic Oddballs

On thermalization of a boost-invariant non Abelian plasma

Exclusive b→sννˉ induced transitions in RSc​ model

Rare semileptonic B→K∗ℓ+ℓ− decays in RSc​ model

On the decay mode $Λ_{b} \to X_{s} γ$

$π^{0}, η, η^{'}$ two-photon transition form factors in the holographic soft-wall model and contributions to $(g - 2)_{μ}$

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

Role of $B_{c}^{+} \to B_{s, d}^{(*)} ℓ ˉ ν_{ℓ}$ in the Standard Model and in the search for BSM signals

Chaos in a $Q Q ˉ$ system at finite temperature and baryon density

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

Probing New Physics with $B ˉ \to ρ (770) ℓ^{-} ν ˉ_{ℓ}$ and $B ˉ \to a_{1} (1260) ℓ^{-} ν ˉ_{ℓ}$

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

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

Exclusive $b \to s ν ν ˉ$ induced transitions in RS $_{c}$ model

Rare semileptonic $B \to K^{*} ℓ^{+} ℓ^{-}$ decays in RS $_{c}$ model