Pietro Colangelo

collaborators

7 papers

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 $B^{-} \to ℓ^{-} I^ˉ ½_{ℓ}$ , $B ˉ^{0} \to I ¨ ^{+} ℓ^{-} I^ˉ ½_{ℓ}$ , and $B^{-} \to I ¨ ^{0} ℓ^{-} I^ˉ ½_{ℓ}$ leveraging the precise mea…

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-ph2026

Two-lepton tales: Dalitz decays of heavy quarkonia

Pietro Colangelo, Fulvia De Fazio, Riccardo Pinto

We study the Dalitz decays of heavy quarkonia, which result from the internal virtual photon conversion into an $ℓ^{+} ℓ^{-}$ lepton pair. Heavy-quark symmetries allow us to esta…

hep-ph2026

Quark-lepton correlations in gauge anomaly free abelian extension of the Standard Model

Pietro Colangelo, Fulvia De Fazio, Davide Milillo

We study $b \to s ℓ_{1}^{+} ℓ_{2}^{-}$ transitions, both for the lepton flavour conserving $ℓ_{1} = ℓ_{2}$ and violating case $ℓ_{1} \neq = ℓ_{2}$ , in a minimal extension of the Stan…

hep-ph2025

Correlating lepton flavour violating $b \to s$ and leptonic decay modes in a minimal abelian extension of the Standard Model

Pietro Colangelo, Fulvia De Fazio, Davide Milillo

We consider an abelian extension of the Standard Model (SM) comprising a new gauge group $U (1)^{'}$ , with the neutral gauge boson $Z^{'}$ having flavour violating couplings t…

hep-ph2025

The charming case of $X (3872)$ and $I ¨ _{c 1} (2 P)$

Pietro Colangelo, Fulvia De Fazio, Giuseppe Roselli

More than twenty years have elapsed since the discovery of $I ¨ _{c 1} (3872)$ (previously denoted as $X (3872)$ ), and an impressive amount of theoretical and experimental studies has b…

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

Semileptonic Bq​ decays to heavy tensor mesons

Two-lepton tales: Dalitz decays of heavy quarkonia

Quark-lepton correlations in gauge anomaly free abelian extension of the Standard Model

Correlating lepton flavour violating b→s and leptonic decay modes in a minimal abelian extension of the Standard Model

The charming case of X(3872) and I¨c1​(2P)

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

Correlating lepton flavour violating $b \to s$ and leptonic decay modes in a minimal abelian extension of the Standard Model

The charming case of $X (3872)$ and $I ¨ _{c 1} (2 P)$