Alessandro Cantelli Forti

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Geant4 is a toolkit for simulating the passage of particles through matter. It includes a complete range of functionality including tracking, geometry, physics models and hits. The physics processes offered cover a comprehensive range, including electromagnetic, hadronic and optical processes, a large set of long-lived particles, materials and elements,(More)
We present a search for the decay B + → τ + ν τ in 88.9 × 10 6 Υ (4S) decays recorded with the BABAR detector at the SLAC B-Factory. A sample of semi-exclusive, semi-leptonic B decays (B − → D 0 ℓ − ¯ ν ℓ X), where X is either a photon, π 0 , or nothing, is used to identify the daughter particles that are associated with the other B meson in each event.(More)
We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of Upsilon(4S) decays collected in 2001, bringing the data available to 32 x 10(6) BB macro pairs. We select events in which one neutral B meson is fully(More)
The inclusive production of charmonium mesons in B meson decay has been studied in a 20.3 fb −1 data set collected by the BABAR experiment operating at the Υ (4S) resonance. Branching fractions have been measured for the inclusive production of the charmonium mesons J/ψ , ψ(2S), χc1, and χc2. The branching fractions are also presented as a function of the(More)
We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we(More)
We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B 0 → D * + D * −. The measurements are derived from a data sample of 88 × 10 6 B ¯ B pairs collected by the BABAR detector at the PEP-II energy asymmetric B Factory at SLAC. All results are preliminary.
A search for the exclusive radiative decays B → ρ(770)γ and B 0 → ω(782)γ is performed on a sample of 84 million BB events collected by the BABAR detector at the P EP − II asymmetric e + e − collider. No significant signal is seen in any of the channels. We set preliminary upper limits of B[B 0 → ρ 0 γ] < 1.4 × 10 −6 , B[B + → ρ + γ] < 2.3 × 10 −6 and B[B 0(More)
Using events in which one of two neutral B mesons from the decay of an Upsilon(4S) meson is fully reconstructed, we determine parameters governing decay (DeltaGamma(d)/Gamma(d)), CP, and T violation (|q/p|), and CP and CPT violation (Re z,Im z). The results, obtained from an analysis of 88 x 10(6) Upsilon(4S) decays recorded by BABAR, are sgn(Re(More)
We present a search for the rare flavour-changing neutral-current decay B − → K − νν based on a sample of (86.9 ± 1.0) × 10 6 Υ (4S) → BB events collected in the BABAR experiment at the SLAC B-factory. Signal candidate events are selected by fully reconstructing a B + → D 0 X + decay, where X + represents a combination of up to three charged pions or kaons(More)