R. Frezzotti

collaborators

19 papers

hep-lat2026

Inclusive $B ˉ_{s} \mapsto X_{s ˉ c} ℓ I^ˉ ½$ decays from lattice QCD: computational strategy and a first physical result

Alessandro De Santis, Antonio Evangelista, Gael Finauri +16

We present a strategy to compute the inclusive decay rate for the process $B ˉ_{s} \mapsto X_{s ˉ c} ℓ I^ˉ ½$ from first principles in lattice QCD. The physical decay rate i…

hep-lat2026

Performance of Low Mode Averaging on Twisted-Mass Fermion Ensembles at the physical pion mass point

Constantia Alexandrou, Simone Bacchio, Antonio Evangelista +4

We study the performance of low-mode averaging (LMA) on twisted-mass fermion ensembles at near-physical quark masses, assessing both its theoretical framework and practical cost-ef…

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

Charmonium radiative transitions to dileptons from lattice QCD: The case of $h_{c} \to I^\cdot_{c} ℓ^{+} ℓ^{-}$ and $I ¨ _{c 1} \to J / I ¨ ℓ^{+} ℓ^{-}$

D. BeÄireviÄ, R. Di Palma, R. Frezzotti +4

We present a lattice QCD study of dilepton production in charmonium transitions, specifically focusing on the $1^{+-} \to 0^{-+}$ and $1^{++} \to 1^{--}$ processes: $h_c \to Î·_c \…

hep-lat2026

Lattice determination of the QCD low-energy constant $ℓ_{7}$

Claudio Bonanno, Gilberto Colangelo, Francesco D'Angelo +8

We provide a non-perturbative determination of the scheme- and scale-independent low-energy constant $ℓ_{7}$ , appearing in the QCD effective chiral Lagrangia…

Inclusive Bˉs​↦Xsˉc​ℓI^ˉ½ decays from lattice QCD: computational strategy and a first physical result

Performance of Low Mode Averaging on Twisted-Mass Fermion Ensembles at the physical pion mass point

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

Charmonium radiative transitions to dileptons from lattice QCD: The case of hc​→I^⋅c​ℓ+ℓ− and I¨c1​→J/I¨ℓ+ℓ−

Lattice determination of the QCD low-energy constant ℓ7​

Inclusive $B ˉ_{s} \mapsto X_{s ˉ c} ℓ I^ˉ ½$ decays from lattice QCD: computational strategy and a first physical result

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

Charmonium radiative transitions to dileptons from lattice QCD: The case of $h_{c} \to I^\cdot_{c} ℓ^{+} ℓ^{-}$ and $I ¨ _{c 1} \to J / I ¨ ℓ^{+} ℓ^{-}$

Lattice determination of the QCD low-energy constant $ℓ_{7}$