G. Martinelli

collaborators

5 papers

hep-lat2026

Complete lattice QCD calculation of $K^{-} \to ℓ^{-} I^ˉ ½_{ℓ} ℓ^{^{'} +} ℓ^{^{'} -}$ form factors

R. Di Palma, R. Frezzotti, G. Gagliardi +6

We present the first complete lattice QCD calculation of the four structure-dependent form factors governing the rare charged kaon decay $K^- \to \ell^- \barÎ½_\ell \ell'^+ \ell'^-…

hep-ph2026

Rare kaon decays $K^{-} \to ℓ^{-} I^ˉ ½_{ℓ} ℓ^{' +} ℓ^{' -}$ : Standard Model predictions from lattice QCD

R. Di Palma, R. Frezzotti, G. Gagliardi +6

Weak decays of charged kaons with an additional lepton-antilepton pair, $K^{-} \to ℓ^{-} I^ˉ ½_{ℓ} ℓ^{' +} ℓ^{' -}$ ( $K_{ℓ 2 ℓ^{'}}$ ), are suppressed at order $O(G_{F}^{2}Î±_…

hep-lat2026

Theoretical framework for lattice QCD computations of $B \to K ℓ^{+} ℓ^{-}$ and $B ˉ_{s} \to ℓ^{+} ℓ^{-} I^^{3}$ decays rates, including contributions from charming penguin diagrams

R. Frezzotti, G. Gagliardi, V. Lubicz +6

We develop a strategy for computing the $B \to K ℓ^{+} ℓ^{-}$ and $B ˉ_{s} \to I^^{3} ℓ^{+} ℓ^{-}$ decay amplitudes using lattice QCD (where $ℓ^{\pm}$ are charged leptons). We focus on…

hep-lat2025

Kaon radiative leptonic decay rates from lattice QCD simulations at the physical point

R. Di Palma, R. Frezzotti, G. Gagliardi +6

We present a lattice QCD calculation of the radiative leptonic decay rates of the kaon, improving upon our previous work, arXiv:2006.05358. Our analysis uses gauge ensembles genera…

hep-ph2025

What we can learn from the angular differential rates (only) in semileptonic $B \to D^{*} ℓ I^½_{ℓ}$ decays

G. Martinelli, S. Simula, L. Vittorio

We present a simple approach to the study of semileptonic $B \to D^{*} ℓ I^½_{ℓ}$ decays based on the angular distributions of the final state particles only. Our approach is mode…

Complete lattice QCD calculation of K−→ℓ−I^ˉ½ℓ​ℓ′+ℓ′− form factors

Rare kaon decays K−→ℓ−I^ˉ½ℓ​ℓ′+ℓ′−: Standard Model predictions from lattice QCD

Theoretical framework for lattice QCD computations of B→Kℓ+ℓ− and Bˉs​→ℓ+ℓ−I^3 decays rates, including contributions from charming penguin diagrams

Kaon radiative leptonic decay rates from lattice QCD simulations at the physical point

What we can learn from the angular differential rates (only) in semileptonic B→D∗ℓI^½ℓ​ decays

Complete lattice QCD calculation of $K^{-} \to ℓ^{-} I^ˉ ½_{ℓ} ℓ^{^{'} +} ℓ^{^{'} -}$ form factors

Rare kaon decays $K^{-} \to ℓ^{-} I^ˉ ½_{ℓ} ℓ^{' +} ℓ^{' -}$ : Standard Model predictions from lattice QCD

Theoretical framework for lattice QCD computations of $B \to K ℓ^{+} ℓ^{-}$ and $B ˉ_{s} \to ℓ^{+} ℓ^{-} I^^{3}$ decays rates, including contributions from charming penguin diagrams

What we can learn from the angular differential rates (only) in semileptonic $B \to D^{*} ℓ I^½_{ℓ}$ decays