M. Napolitano
A5004121161- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Medical Imaging Techniques and Applications
- Computational Physics and Python Applications
- Neutrino Physics Research
- Nuclear physics research studies
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2021-2024
Roma Tre University
2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2005-2024
Centre National de la Recherche Scientifique
2023-2024
University of Naples Federico II
2024
Aix-Marseille Université
2023-2024
UCLouvain
2023
University of Michigan
1997-1999
University of Lausanne
1998
A bstract The NA62 experiment reports the branching ratio measurement $$ \mathrm{BR}\left({K}^{+}\to {\pi}^{+}\nu \overline{\nu}\right)=\left({10.6}_{-3.4}^{+4.0}\left|{}_{\mathrm{stat}}\right.\pm {0.9}_{\mathrm{syst}}\right)\times {10}^{-11} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>BR</mml:mi> <mml:mfenced> <mml:mrow> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:mi>π</mml:mi> <mml:mi>ν</mml:mi> <mml:mover> <mml:mo>¯</mml:mo>...
A sample of 3984 candidates the K+→π+γγ decay, with an estimated background 291±14 events, was collected by NA62 experiment at CERN during 2017–2018. In order to describe observed di-photon mass spectrum, next-to-leading contribution in chiral perturbation theory found be necessary. The decay branching ratio full kinematic range is measured (9.61±0.17)×10−7. first search for production and prompt axion-like particle gluon coupling process K+→π+a, a→γγ also reported.
A sample of $2.8 \times 10^4$ $K^{+} \to \pi^{+} \mu^{+} \mu^{-}$ candidates with negligible background was collected by the NA62 experiment at CERN SPS in 2017--2018. The model-independent branching fraction is measured to be $(9.15 \pm 0.08)\times 10^{-8}$, a factor three more precise than previous measurements. decay form presented as function squared dimuon mass. measurement parameters and their uncertainties performed using description based on Chiral Perturbation Theory $\mathcal{O}(p^6)$.
A search for the $K^+\to\mu^-\nu e^+e^+$ decay, forbidden within Standard Model by either lepton number or flavour conservation depending on of emitted neutrino, has been performed using dataset collected NA62 experiment at CERN in 2016--2018. An upper limit $8.1\times 10^{-11}$ is obtained decay branching fraction 90% CL, improving a factor 250 over previous search.
The first search for ultra-rare K+ decays into the π+e+e−e+e− final state is reported, using a dataset collected by NA62 experiment at CERN in 2017–2018. An upper limit of 1.4×10−8 90% CL obtained branching ratio K+→π+e+e−e+e− decay, predicted Standard Model to be (7.2±0.7)×10−11. Upper limits are level 10−9 ratios two prompt decay chains involving pair-production hidden-sector mediators: K+→π+aa, a→e+e− and K+→π+S, S→A′A′, A′→e+e−.
We present a measurement of the branching ratio CP violating decay KL->pi+pi- performed by KLOE experiment at phi factory DAFNE. use 328 pb-1 data collected in 2001 and 2002, corresponding to ~ 150 million tagged KL mesons. find BR(KL->pi+pi-) = $(1.963 +/- 0.012 0.017)x 10^-3. This is fully inclusive final-state radiation. Using above result, we determine modulus amplitude |\eta_{+-}| be (2.219 0.013)x 10^{-3} |\epsilon| (2.216 10^{-3}.
A sample of 2.8⇥10 4 K + !⇡ µ candidates with negligible background was collected by the NA62 experiment at CERN SPS in 2017-2018.The model-independent branching fraction is measured to be (9.15 ± 0.08) ⇥ 10 8 , a factor three more precise than previous measurements.The decay form presented as function squared dimuon mass.A measurement parameters and their uncertainties performed using description based on Chiral Perturbation Theory O(p 6 ).
Abstract The NA62 experiment at CERN utilises a differential Cherenkov counter with achromatic ring focus (CEDAR) for tagging kaons within an unseparated monochromatic beam of charged hadrons. CEDAR-H detector was developed to minimise the amount material in path by using hydrogen gas as radiator medium. shown satisfy kaon requirements test-beam before installation and commissioning experiment. performance measured data collected 2023.
The most precise determinations of V us comes from semileptonic kaon decays.The KLOE experiment at DAΦNE the Frascati φ factory , has measured all experimental inputs to for both neutral and charged kaons.Preliminary results BR(K ± → π 0 e ν) µ ν), τ are presented, together with measurements K L e3 µ3 decay BR, S BR lifetime .From our 5 branching ratios we find =0.2258±0.0022.We have also fully inclusive + µ2 (γ) absolute ratio which obtain µν(γ))=0.6366±0.0017.Combining this value recent...