A5004942274- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Trace Elements in Health
- Dark Matter and Cosmic Phenomena
- Physics of Superconductivity and Magnetism
- Cold Atom Physics and Bose-Einstein Condensates
- Alzheimer's disease research and treatments
- Protein Structure and Dynamics
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Prion Diseases and Protein Misfolding
- Spectral Theory in Mathematical Physics
- Theoretical and Computational Physics
- Computational Physics and Python Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Spectroscopy and Quantum Chemical Studies
- Particle Detector Development and Performance
- Quantum chaos and dynamical systems
- Advanced Thermodynamics and Statistical Mechanics
- Enzyme Structure and Function
- Particle Accelerators and Free-Electron Lasers
- RNA and protein synthesis mechanisms
University of Rome Tor Vergata
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2015-2024
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2012-2024
Enrico Fermi Center for Study and Research
2015-2024
Istituto Nazionale di Fisica Nucleare
1984-2024
University of Bern
2022
University of Bonn
2022
University of Cyprus
2021
Sapienza University of Rome
1983-2019
Michigan State University
2019
We present a lattice QCD calculation of the up, down, strange and charm quark masses performed using gauge configurations produced by European Twisted Mass Collaboration with Nf = 2 + 1 dynamical quarks, which include in sea, besides two light mass degenerate also quarks close to their physical values. The simulations are based on unitary setup for mixed action approach quarks. analysis uses data at three values spacing pion range 210 - 450 MeV, allowing accurate continuum limit controlled...
A large number of hDAF transgenic pigs to be used for xenotransplantation research were generated by using sperm-mediated gene transfer (SMGT). The efficiency transgenesis obtained with SMGT was much greater than any other method. In the experiments reported, up 80% had transgene integrated into genome. Most carrying transcribed it in a stable manner (64%). great majority that expressed protein (83%). transmitted progeny. Expression and found caveolae as is human cells. functional based on...
We present a method to evaluate on the lattice leading isospin breaking effects due both small mass difference between up and down quarks QED interaction. Our proposal is applicable in principle any $\mathrm{QCD}+\mathrm{QED}$ gauge invariant hadronic observable that can be computed lattice. It based expansion of path integral powers parameters $({\stackrel{^}{m}}_{d}\ensuremath{-}{\stackrel{^}{m}}_{u})/{\ensuremath{\Lambda}}_{\mathrm{QCD}}$...
We present a comprehensive investigation of light meson physics using maximally twisted mass fermions for N f = 2 mass-degenerate quark flavours. By employing four values the lattice spacing, spatial extents ranging from 2.0 fm to 2.5 and pseudo scalar masses in range 280 ≲ m PS 650MeV we control major systematic effects our calculation. This enables us confront data with SU(2) chiral perturbation theory extract low energy constants effective Lagrangian derived quantities, such as mass.
We present results on the nucleon scalar, axial, and tensor charges as well momentum fraction, helicity transversity moments. The pion fraction is also presented. computation of these key observables carried out using lattice QCD simulations at a physical value mass. evaluation based gauge configurations generated with two degenerate sea quarks twisted mass fermions clover term. investigate excited states contributions quantum numbers by analyzing three sink-source time separations. find...
We present a lattice QCD calculation of the pseudoscalar decay constants fK, fD and fDs performed using gauge configurations produced by European Twisted Mass Collaboration with Nf = 2 + 1 dynamical quarks, which include in sea, besides two light mass degenerate also strange charm quarks masses close to their values real world. The simulations are based on unitary setup for mass-degenerate mixed action approach quarks. use data simulated at three different spacing range 0.06 - 0.09 fm pion...
We present a lattice QCD computation of the b-quark mass, B and s decay constants, B-mixing bag prameters for full four-fermion operator basis as well determinations ξ f Bq $ \sqrt{{B_i^{(q) }}} extrapolated to continuum limit physical pion mass. used N = 2 twisted mass Wilson fermions at four values spacing with masses ranging from 280 500 MeV. Extrapolation in heavy quark charm bottom region has been carried out on ratios quantities computed nearby masses, exploiting fact that they have an...
We present the QCD simulation of first gauge ensemble two degenerate light quarks, a strange and charm quark with all masses tuned to their physical values within twisted mass fermion formulation. Results for pseudoscalar decay constants confirm that produced is indeed at parameters theory. This conclusion corroborated by complementary analysis in baryon sector. examine cutoff isospin breaking effects demonstrate they are suppressed through presence clover term action.
We present results for the renormalization constants of bilinear quark operators obtained by using tree-level Symanzik improved gauge action and Nf=2 twisted mass fermion at maximal twist, which guarantees automatic O(a)-improvement. Our are also relevant corresponding standard (un-twisted) Wilson fermionic since two actions only differ, in massless limit, a chiral rotation fields. The scale-independent ZV, ZA ratio ZP/ZS have been computed RI-MOM approach, as well other alternative methods....
A bstract We present the first unquenched, continuum limit, lattice QCD results for matrix elements of operators describing neutral kaon oscillations in extensions Standard Model. Owing to accuracy our calculation on ∆ S = 2 weak Hamiltonian elements, we are able provide a refined Unitarity Triangle analysis improving bounds coming from model independent constraints New Physics. In nonperturbative computation use combination N f maximally twisted sea quarks and Osterwalder-Seiler valence...